CN213525696U - Bone grafting device in operation - Google Patents

Abstract

The utility model relates to a bone grafting device in art, including planting the bone pipe and being used for crowded bone grafting pole that pushes away the intraductal content of planting the bone, it establishes the opening to plant bone pipe wall middle part, the opening is fixed to planting the bone storehouse through buckle structure intercommunication, it establishes the spring that is used for bearing aggregate tray to plant bone storehouse bottom, the edge of aggregate tray with it closely cooperates to plant bone storehouse inner wall, the aggregate tray is concave type or plate. The beneficial effects of the utility model are that realized the simplification of bone grafting process, promoted bone grafting efficiency.

Description

Bone grafting device in operation

Technical Field

The utility model relates to a bone grafting device in the art relates to the bone restoration and the field of rebuilding, specifically is a novel bone grafting instrument that the practicality is strong, be fit for clinical application.

Background

The bone grafting is widely applied in the bone surgery, the main implants comprise autogenous bone, allogeneic bone, artificial bone and the like, but the application of the bone grafting instrument used in the bone grafting process is not mature. The surgeon usually needs to select non-specific instruments such as osteotome, hemostat, periosteum elevator, etc. temporarily during the operation according to the shape of the bone defect and the type of the implant, thus it takes a long time to prolong the operation process. At the same time, due to the shape and size limitations of the instruments, the desired position of the implant is difficult to reach and maintain. And the operator often can't effective control apparatus and implant interface size and pressure when pressurizeing to the implant to lead to the bone grafting effect not to be fully satisfactory. Although the existing bone grafting instrument can solve part of the problems, most of the existing bone grafting instruments are not perfect in design, have the defects of low operation efficiency, incapability of adapting to different bone grafting contact surfaces, high requirements on operation experience of operators and the like, and limit the wide clinical application of the bone grafting instrument.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and solve the problem of difficult bone grafting operation.

For reaching above-mentioned utility model purpose, provide a bone grafting ware in art, including planting the bone pipe and being used for crowded bone grafting pole of pushing away the content of planting the bone pipe, the opening is established at bone grafting pipe wall middle part, the opening is fixed to planting the bone storehouse through buckle structure intercommunication, it establishes the spring that is used for bearing aggregate tray to plant bone storehouse bottom, the edge of aggregate tray with it closely cooperates to plant bone storehouse inner wall, aggregate tray is concave type or plate.

The top of the bone grafting bin is provided with an opening which is butted with the opening of the bone grafting tube. The bottom of the bone grafting bin is provided with a spring structure, the action principle of the spring structure is similar to that of a magazine, so that aggregate can be pressed into the bone grafting bin in advance.

Preferably, the top of the bone grafting bin is provided with an aggregate baffle plate.

The aggregate baffle plate can be in the forms of an inserting plate, a rotary cover plate and the like, so that the coverage of the aggregate baffle plate on the opening of the bone grafting bin can be controlled from the outside of the bone grafting bin.

Preferably, the bottom of the bone grafting bin is provided with a through hole, and a bin position control rod penetrates into the through hole; the bottom of the spring is connected with the penetrating end of the bin control rod.

The penetrating end of the bin position control rod penetrates into the bone grafting bin, and the other end of the bin position control rod is used for a user to adjust outside the bin. The penetrating end of the bin position control rod realizes the adjustment of the capacity of the bone grafting bin by adjusting the position of the spring in the bone grafting bin.

Preferably, a slot is arranged beside the through hole; at least two cross rods matched with the grooves are convexly arranged beside the bin control rod, and the cross rods are arranged at intervals in the length direction of the bin control rod.

The bin control rod and a cross rod on the bin control rod can be combined to form a section model which can pass through the open groove in a matching way through rotation; when the rotation is staggered, the cross rod can also lean against the bottom of the bone grafting bin, so that the bin position control rod is positioned.

Preferably, the bottom end of the bone grafting rod is provided with a push-pull handle.

The cross section of the push-pull handle can cover and is larger than the entrance of the inner cavity of the bone grafting tube.

Preferably, the bottom end of the bone grafting rod and the tail end of the bone grafting tube are provided with corresponding distance sensor receiving and transmitting structures.

The distance sensor is divided into a receiving and transmitting structure, which may be in the form of microwave, optical, magnetic, etc. distance sensors commonly found in the prior art.

Preferably, the bone grafting rod is used for penetrating the top end of the bone grafting tube to arrange a pressure sensor.

The pressure sensor is arranged at the position where the bone grafting rod is contacted with the bone grafting surface, and can reflect the pressure of the bone grafting rod on the bone grafting surface.

Preferably, the edge of the top end of the bone grafting tube is provided with a rough structure for abutting against the surface of the bone.

Preferably, the coarse structure is a fine sawtooth structure, and the protruding direction of the fine sawtooth structure is the same as the length direction of the bone grafting tube.

The fine sawtooth structure can be annularly arranged on the surface of the top end of the bone grafting tube.

Preferably, the cross section of the inner cavity of the bone grafting tube is matched with the cross section of the bone grafting rod, and the cross section of the bone grafting rod is in one of a regular triangle shape, a regular hexagon shape or a circular shape.

The bone grafting rod is fully filled with the bone grafting pipe on the cross section, so that the aggregate can be integrally pushed.

Through planting the bone storehouse reinforced in to planting the bone pipe, the piston motion of bone pole can reach the effect of continuous bone grafting operation is planted in the cooperation. The bone grafting bin is convenient to assemble and disassemble; after the bone grafting instrument is used, a plurality of bone grafting bins can be prepared in advance according to the bone defect amount, the bone grafting bins can be directly replaced and used, the embarrassment that an operator can take bone while grafting the bone can be avoided, the time is saved, and the efficiency is improved.

The opening of the bone grafting bin is sealed by moving the aggregate blocking plate, so that aggregates can be conveniently stored in advance for later use; after the bone grafting bin is connected to the bone grafting pipe, the movable aggregate blocking piece is opened, and the aggregate in the bin can be pushed by the spring to enter the bone grafting pipe from the opening. In use, if the bone material in a single bone grafting bin is insufficient, the other bone grafting bin pre-stored with the bone material can be replaced. Meanwhile, the aggregate blocking plate can limit the aggregate to enter and exit, so that the aggregate is prevented from leaking out of the bone grafting bin, and the movement of the bone grafting rod in the bone grafting tube is influenced.

The bin position control rod is arranged at the bottom of the bone grafting bin, so that the bone quantity during loading or pushing can be controlled.

The bin position control rod and the upper cross rod thereof are matched in a rotating way, so that the adjustment of different bin positions of the bone grafting bin can be realized, and the capacity of the bone grafting bin can be conveniently controlled when aggregates are loaded and pushed out.

The push-pull handle provides sufficient installation space for relevant equipment in the bone grafting rod, prevents the whole bone grafting rod from penetrating into the bone grafting tube, and provides a comfortable force application position for a user. Is beneficial to the stability of the bone grafting tube when the bone hammer chisels the bone grafting rod in the bone grafting process.

The feedback of the distance information can prompt the operator to adjust the bone grafting operation, and the convenience of instrument control is obviously improved.

The pressure sensor outputs the pressure condition of the bone grafting surface, so that a surgeon can conveniently adjust the quantity of the implanted aggregates and analyze the condition of the bone grafting surface in the bone surgery. The feedback of pressure information helps the operator to adjust the action force of chiseling the bone graft, indirectly prompts the tamping degree of sclerotin and avoids the defect caused by insufficient vision.

The rough structure and the bone surface can realize stable positioning and anchor action, and the bone grafting tube is prevented from sliding out of the bone grafting position.

The fine sawtooth structure is matched with the operation posture of the operation, so that the bone grafting positioning can be better realized, the side slipping or drifting of the bone grafting pipe is avoided, and the use on the smooth bone grafting surface is particularly facilitated. And the sawtooth structure can also enable the bone grafting tube to be used as a local bone taking device (similar to a trephine) independently.

The corner combination of three specifications of the bone grafting tube and the bone grafting rod can basically cover the shape of the bone defect with multiple changes in the bone grafting operation, and is convenient for an operator to effectively pressurize and tamp the bone grafting material.

The beneficial effects of the utility model are that realized the simplification of bone grafting process, promoted bone grafting efficiency.

Drawings

FIG. 1 is a cross-sectional view of a bone grafting tube of the bone grafting instrument of the present invention;

FIG. 2 is a schematic view of a bone grafting rod of the bone grafting instrument for the operation of the present invention;

fig. 3 is a schematic view showing the movement of a bin position control rod and the opening state of an aggregate baffle plate in a bone grafting bin of the bone grafting device in the operation of the utility model;

fig. 4 is a schematic view showing the locking state of the bin position control rod and the closing state of the aggregate separation blade in the bone grafting bin of the bone grafting device in the operation of the utility model;

FIG. 5 is a schematic view of the bone grafting instrument of the present invention;

FIG. 6 is a schematic view showing the bone grafting rod of the bone grafting instrument in the operation of the present invention in a pulled-back state;

FIG. 7 is a schematic view showing a pushing state of a bone grafting rod of the bone grafting instrument in the operation of the present invention;

wherein:

1-bone grafting tube 2-bone grafting rod 3-push-pull handle

4-fine sawtooth structure 5-distance sensor 6-pressure sensor

7-bone grafting bin 8-spring 9-bin level control rod

10-aggregate baffle plate 11-buckle structure

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

According to a bone grafting instrument in operation shown in fig. 1 to 7, including bone grafting tube 1 and bone grafting rod 2 for squeezing and pushing the content of bone grafting tube, an opening is established at the middle part of the wall of bone grafting tube 1, the opening is fixed to bone grafting bin 7 through buckle structure 11 intercommunication, spring 8 for bearing aggregate tray is established at the bottom of bone grafting bin 7, the edge of aggregate tray closely cooperates with the inner wall of bone grafting bin 7, the aggregate tray is concave or flat.

An aggregate baffle plate 10 is arranged at the top of the bone grafting bin 7. The bottom of the bone grafting bin 7 is provided with a through hole, and a bin position control rod 9 penetrates into the through hole; the bottom of the spring 8 is connected with the penetrating end of the bin control rod 9. A slot is arranged beside the through hole; at least two cross rods matched with the grooves are convexly arranged beside the bin control rod 9, and the cross rods are arranged at intervals in the length direction of the bin control rod 9.

The bottom end of the bone grafting rod 2 and the tail end of the bone grafting tube 1 are provided with corresponding distance sensors 5 for receiving and transmitting structures. The bone grafting rod 2 is used for penetrating the top end of the bone grafting tube and distributing a pressure sensor 6. The bottom end of the bone grafting rod 2 is provided with a push-pull handle 3.

The edge of the top end of the bone grafting tube 1 is provided with a fine sawtooth structure 4 used for abutting against the surface of a bone, and the protruding direction of the fine sawtooth structure 4 is the same as the length direction of the bone grafting tube.

The cross section of the inner cavity of the bone grafting tube 1 is matched with the cross section of the bone grafting rod 2, and the cross section of the bone grafting rod 2 is in one of a regular triangle shape, a regular hexagon shape or a circular shape.

In a more specific embodiment, as shown in fig. 1, three bone grafting tubes 1 are selected from the bone grafting instrument in the operation, and the bone grafting tubes are respectively a cylindrical bone grafting tube, a triangular prism bone grafting tube and a hexagonal prism bone grafting tube with two open ends. The top end of the bone grafting tube 1 is provided with a fine sawtooth structure 4, the tail end of the bone grafting tube is provided with an anti-skid wooden handle, and the output end of a distance sensor 5 is fixed in the wooden handle.

As shown in fig. 2, the engaged bone grafting rods 2 are also divided into three corresponding rods, i.e., cylindrical bone grafting rods, triangular prism bone grafting rods, and hexagonal prism bone grafting rods. The bottom ends are T-shaped push-pull handles 3. A pressure sensor 6 is arranged in the end of the bone grafting rod head 2; the bottom end is provided with a receiving end of a distance sensor 5.

As shown in fig. 3 to 4, the bone grafting bin 7 is a hollow cylinder similar to a rifle magazine, and the top end opening is connected to the middle opening of the bone grafting tube 1 through a buckle structure 11. The aggregate baffle plate 10 is spirally penetrated through the side wall of the bone grafting pipe 1 to control the internal aggregate to enter and exit. The spring 8 supporting the aggregate tray at the bottom can push the internal aggregate into the bone grafting tube 1. The bottom of the bone grafting bin is connected with a bin control rod 9, and when the cross rod of the bin control rod 9 is superposed with the slotting position at the bottom end of the bone grafting bin 7, the bin control rod 9 is in a movable state; when the cross rod is staggered with the slotting position, the cross rod is propped against the bottom of the bone grafting bin 7, so that the bin position is controlled to be in a locking state. Thereby can control the internal capacity in bone grafting storehouse 7 through position in storehouse control lever 9, can accurate control aggregate's business turn over with aggregate separation blade 10 together in coordination.

As shown in fig. 5, when the bone graft is completely installed during the operation, the bone grafting rod 2 is positioned inside the bone grafting tube 1 with a corresponding shape, and can perform piston movement therein; the bone grafting bin 1 can be internally provided with a pre-stored bone substance which is connected to the middle part of the bone grafting tube 1 through a buckle structure 11.

As shown in figure 6, when the bone grafting rod 2 is pulled back, the aggregate is pushed in from the bone grafting bin 1. At the moment, the bone grafting rod 2 is positioned behind the opening of the bone grafting tube 1, the aggregate blocking piece 10 at the top end of the bone grafting bin 7 is opened, and the bottom spring 8 pushes the tray to push the pre-stored aggregate into the bone grafting tube 1. To control the amount of aggregate pushed in, the bin level control rod 9 is set in a locked state. During travel, the information output by the distance sensor may change.

As shown in fig. 7, when the bone grafting rod 2 is pushed, the aggregate starts to be pressed for bone grafting. At the moment, the bone grafting rod 2 pushes the bone material in the bone grafting tube 1 to the head end to reach the bone grafting surface. The operator can complete the bone grafting and the pressurizing process by chiseling the push-pull handle 3. The output information of the distance sensor 5 and the pressure sensor 6 in the process changes in real time: when the top end of the bone grafting rod 2 does not reach the top end of the bone grafting tube 1, the distance between the top ends of the tube and the rod is set to be a negative value, and when the top end of the bone grafting rod 2 exceeds the top end of the bone grafting tube 1, the distance is set to be a positive value; when the bone is not tamped, the bone grafting rod 2 is chiseled, the pressure at the top end is displayed to be smaller, and when the bone is tamped, the display is enlarged, so that the completion of bone grafting is prompted.

In the specific bone grafting operation process:

taking the example of taking iliac bone grafting from nonunion body after tibia inferior fracture surgery, the bone defect surface of such nonunion is often irregular, and has higher requirements for the bone grafting: (1) avoiding the adherent residues of bone grains or bone blocks or the free bone grains or bone blocks in the muscle gaps; (2) the tibia is an important structure for bearing weight, so the bone grafting depth and density should be ensured, and a certain amount of cortical bone should be reserved at the periphery of the bone grafting to ensure the supporting force; (3) in the bone grafting process, effective shaping is required to ensure good attachment degree and force line.

Before operation, the bone grafting tube 1 and the bone grafting rod 2 are connected according to the attached drawing, and the output of the distance sensor 5 and the output of the pressure sensor 6 are adjusted. After the autologous ilium is taken out in the operation, a plurality of ilium blocks with proper sizes are cut and divided into two parts of cancellous bone and cortical bone. Appropriate bone blocks are taken according to the shape and the size of the deep bone defect surface, spongy bone is taken as the main material, the bone blocks are placed into the bone grafting bin 7, then the implant with partial cortical bone is plugged into the other bone grafting bin 7, and the aggregate blocking pieces 10 are respectively closed. The opening of the bone grafting bin 7 is aligned to the opening in the middle of the triangular prism bone grafting tube 1, and the bone grafting bin is fixed on the bone grafting tube 1 through the buckle structure 11 after being inserted. After the top end of the bone grafting tube 1 is extended into the deep bone defect surface, the bone grafting tube is fixed at an ideal position by the fine sawtooth structure 4. The aggregate separation blade 10 is opened, the bin control rod 9 is rotated to the active state, the aggregate in the bone grafting bin 7 is pushed into the bone grafting tube 1 by the spring 8, and enters a proper amount of implant, and then the bin control rod is rotated to abut against the bottom end of the bone grafting bin 7 to form a locking state. The bone grafting tube 1 is fixed, the triangular prism-shaped bone grafting rod 2 is selected to extend into the bone grafting tube 1, and the implant is pushed to reach the deep bone defect surface in the process. Then, the sharp edge of the handle is used as a force point, and the push-pull handle 3 is chiseled by a bone hammer. At this time, since the bone grafting surface is deep, an operator often cannot look directly at the complete bone grafting contact surface, and particularly, the operator is more difficult to observe the entering depth of the bone grafting rod 2 and control the bone grafting operation force during the chiseling action. The real-time position information of the distance sensor 5 and the pressure sensor 6 is known in cooperation with the information. In addition, when the pressure value at the top end of the bone grafting rod 2 is continuously increased, the distance from the head end of the tube-rod is increased to a certain positive value and is stable, the fact that the bone of the patient is tamped is prompted. Under the condition of not directly viewing the bone grafting surface, an operator finishes the bone grafting and pressurizing process of the deep bone defect and then takes out the bone grafting device.

A hexagonal prism bone grafting tube 1 is selected. The opening of the other bone grafting bin 7 is aligned with the opening in the middle of the bone grafting tube 1, and the bone grafting bin is fixed on the bone grafting tube 1 through the buckle structure 11 after being inserted. After the top end of the bone grafting tube 1 is extended into the peripheral bone defect surface, the bone grafting tube is fixed at an ideal position by the fine sawtooth structure 4. The aggregate blocking plate 10 is opened, the bin position control rod 9 is rotated to be in a movable state, the implant in the bone grafting bin 7 is pushed into the bone grafting tube 1 through the spring 8, and after the implant enters a proper amount of the implant, the bin position control rod 9 is rotated to be in a locking state. The bone grafting tube 1 is held by hand, the hexagonal prism-shaped bone grafting rod 2 is selected to extend into the bone grafting tube 1, and the implant is pushed to reach the peripheral bone defect surface in the process. Then, the sharp edge of the bone grafting device is used as an acting point, the push-pull handle 3 is chiseled by a bone hammer to ensure that the cortical bone is properly separated to form a certain curvature, thereby achieving the purpose of plasticity, and the bone grafting device is taken out after the plasticity is completed.

A cylindrical bone grafting tube 1 is selected, the head end of the bone grafting tube 1 is stretched into the peripheral bone defect surface, and then the bone grafting tube is fixed at an ideal position by a fine sawtooth structure 13. The bone grafting tube 1 is held by hand, the cylindrical bone grafting rod 2 is selected, the top end of the bone grafting tube 1 extends into the peripheral bone defect surface, the push-pull handle 3 is chiseled by a bone hammer, and the implant is further tamped to be better attached to the backbone to form a better force line. At this moment, the pressure value of the top end of the bone grafting rod 2 output by the pressure sensor 6 is continuously increased, and the distance between the top ends of the barrel and the rod is increased to a certain positive value and is stable, so that the completion of the bone grafting and pressurizing process of the peripheral bone defect surface is prompted.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, and that various changes and modifications may be made, which are within the scope of the appended claims.

Claims (10)

1. The utility model provides a bone grafting instrument in art, includes bone grafting pipe (1) and bone grafting pole (2) that are used for crowded pushing away the intraductal content of bone grafting, its characterized in that, establish the opening in the middle part of bone grafting pipe (1) wall, the opening is fixed to bone grafting storehouse (7) through buckle structure (11) intercommunication, bone grafting storehouse (7) bottom is established and is used for bearing spring (8) of aggregate tray, the edge of aggregate tray with bone grafting storehouse (7) inner wall closely cooperates, the aggregate tray is concave type or flat board.

2. The bone grafting device according to claim 1, characterized in that an aggregate baffle plate (10) is arranged at the top of the bone grafting bin (7).

3. The bone grafting device according to claim 1, characterized in that the bottom of the bone grafting bin (7) is provided with a through hole, and a bin position control rod (9) is penetrated into the through hole; the bottom of the spring (8) is connected with the penetrating end of the bin control rod (9).

4. The bone grafting device as claimed in claim 3, wherein a slot is provided beside the through hole; at least two cross rods matched with the grooves are convexly arranged beside the bin control rod (9), and the cross rods are arranged at intervals in the length direction of the bin control rod (9).

5. The bone grafting instrument according to claim 1, characterized in that the bottom end of the bone grafting rod (2) is provided with a push-pull handle (3).

6. The bone grafting instrument according to claim 1, characterized in that the bottom end of the bone grafting rod (2) and the tail end of the bone grafting tube (1) are provided with corresponding receiving and transmitting structures of a distance sensor (5).

7. The bone grafting instrument according to claim 1, characterized in that the bone grafting rod (2) is used for passing through the top end of the bone grafting tube to arrange the pressure sensor (6).

8. Bone graft according to claim 1, characterised in that the edge of the top end of the bone graft tube (1) is provided with a roughness for abutment against the bone surface.

9. The bone grafting instrument according to claim 8, wherein the coarse structure is a fine saw tooth structure (4), and the convex direction of the fine saw tooth structure (4) is the same as the length direction of the bone grafting tube.

10. The bone grafting device according to claim 1, characterized in that the cross section of the inner cavity of the bone grafting tube (1) is matched with the cross section of the bone grafting rod (2), and the cross section of the bone grafting rod (2) is shaped as one of a regular triangle, a regular hexagon or a circle.

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