Spine bone grafting funnel

Abstract

The utility model provides a spine bone grafting funnel, which belongs to the technical field of medical instruments and comprises an aggregate hopper and a bone grafting tube, the aggregate hopper is communicated with the bone grafting tube, and an observation window and an aggregate discharge port are arranged on the side of the lower end of the bone grafting tube. By means of the spine bone grafting funnel, in the operation process, a doctor can conveniently and directly observe the preset state of a bone grafting bone block in the tube and accurately measure and calculate the bone grafting volume, the bone block in the bone grafting tube can be conveniently beaten out to the intervertebral space, the bone grafting tube is prevented from being blocked, and a better operation effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a spinal bone grafting funnel. Background Art

[0002] In orthopedic surgery, when bone grafting is required due to bone defects or after removing necrotic parts, a professional bone grafting funnel is required in most cases to reduce the risk of spinal nerve damage during the operation and improve the surgical effect.

[0003] The existing bone grafting funnel has a closed round tube in its bone grafting tube. During the operation, the doctor cannot accurately perceive the position of the bone blocks in the bone grafting tube and the degree of compaction of the bone blocks through observation, which makes it impossible for the doctor to accurately calculate the amount of bone grafting. In addition, since the situation in the bone grafting tube cannot be observed, the bone blocks are prone to blockage in the bone grafting tube. In order to avoid blockage as much as possible, the doctor can only reduce the speed of placing the bone grafting material, resulting in a slow bone grafting process. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a spinal bone grafting funnel. The technical problem to be solved by the utility model is how to quickly implant a sufficient amount of finely crushed bone fragments between vertebrae without causing blockage, and to know the bone grafting volume during the operation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A spinal bone grafting funnel comprises a bone material hopper and a bone grafting tube. The bone material hopper is communicated with the bone grafting tube, and an observation window is arranged on the side of the lower end of the bone grafting tube.

[0007] Furthermore, the observation window is marked with scale.

[0008] Furthermore, an aggregate discharge port is provided at the lower end of the bone grafting tube.

[0009] Furthermore, the bone graft tube comprises a guide tube and a sliding cover, and the guide tube and the sliding cover are slidably connected.

[0010] Furthermore, a first baffle is provided at the upper middle portion of the conduit. The first baffle is in the form of an annular protrusion and is arranged along the circumferential direction of the outer wall of the conduit.

[0011] Furthermore, a rail groove is provided on the conduit, and a slider is provided on the sliding cover. The slider and the rail groove cooperate with each other. The rail groove is a groove on the conduit, and the rail groove is arranged along the length direction of the conduit. The slider is a protrusion on the sliding cover, and the slider is arranged along the length direction of the sliding cover.

[0012] Furthermore, a pull-up bolt is provided at the upper end of the sliding cover, and the pull-up bolt is symmetrically arranged on both sides of the sliding cover.

[0013] Furthermore, the cross section of the aggregate hopper is oval in shape, and the central axis of the bone grafting tube passes through one of the centers of the cross section of the aggregate hopper.

[0014] Furthermore, the spinal bone grafting funnel also includes a bone grafting rod, and the bone grafting rod cooperates with the bone grafting tube.

[0015] Furthermore, the bone grafting rod includes a rod body, a sliding hammer, a second baffle and a third baffle, the sliding hammer is sleeved on the rod body and is gap-matched with the rod body, the second baffle is arranged at the top of the rod body, the third baffle is arranged in the middle of the rod body, the sliding hammer is located between the second baffle and the third baffle, and the surface of the rod body below the third baffle is marked with scales.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. By setting an observation window on the bone graft tube, the doctor can directly observe the preset state of the bone graft in the tube during the operation, and the observation window is marked with scales, which can accurately measure the bone graft volume;

[0018] 2. By setting an aggregate discharge port on the guide tube of the bone graft tube, the sliding cover of the bone graft tube can be moved in coordination with the aggregate discharge port. When placing aggregates, the sliding cover closes the aggregate discharge port without affecting the pre-placed bone blocks. When the aggregates need to be discharged, the sliding cover is pulled up through the pull-up bolt at the upper end of the sliding cover to expose the aggregate discharge port, making it convenient to drive the bone blocks in the bone graft tube to the intervertebral space, thereby avoiding blockage of the bone graft tube.

[0019] 3. By arranging a sliding hammer on the bone graft rod, the impact force of the sliding hammer can drive the bone block in the bone graft tube to the intervertebral space, and the sliding hammer slides between the second baffle and the third baffle, and the motion potential energy is in a fixed range, which is convenient for controlling the force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a bone graft rod according to an embodiment of the utility model;

[0022] Figure 3 for Figure 1 A partial enlarged view of the middle part;

[0023] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0024] Figure 5 for Figure 2 A partial enlarged view of point C in the middle;

[0025] Figure 6 for Figure 2 A partial enlarged view of point D in the middle;

[0026] Figure 7 for Figure 1 Middle EE section;

[0027] Figure 8 for Figure 1 Middle FF section;

[0028] Fig. 9 for Figure 1 Middle GG section;

[0029] Fig.10 for Figure 1 Middle HH section.

[0030] The parts represented by the reference numerals in the figure are listed as follows:

[0031] 1-aggregate hopper, 2-bone grafting tube, 3-conduit, 301-observation window, 302-aggregate discharge port, 303-first baffle, 304-rail groove, 4-slide cover, 401-sliding block, 402-lifting bolt, 5-bone grafting rod, 501-rod body, 502-sliding hammer, 503-second baffle, 504-third baffle. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is clearly and completely described below in conjunction with the accompanying drawings.

[0033] As attached Figure 1-10 As shown, this embodiment provides the following technical solutions:

[0034] A spinal bone grafting funnel comprises a bone hopper 1 and a bone grafting tube 2. The bone hopper 1 is communicated with the bone grafting tube 2. An observation window 301 is arranged on the side of the lower end of the bone grafting tube 2.

[0035] In some embodiments of the utility model, the observation window 301 is 2 mm wide and 5 cm long. On the walls of the bone graft tubes corresponding to both sides of the observation window 301, scales are marked every 0.5 mm starting from the bottom end of the bone graft tube 2, and the scales are laser engraved marks.

[0036] In some embodiments of the utility model, the lower end of the bone graft tube 2 is further provided with an aggregate discharge port 302, which is 1 cm high and 2 / 5 of the circumference of the cross section of the bone graft tube 2, starting from the bottom end of the bone graft tube 2.

[0037] The bone graft tube 2 includes a catheter 3 and a sliding cover 4. The observation window 301 and the aggregate discharge port 302 are both located at the lower part of the catheter 3. The catheter 3 and the sliding cover 4 are connected by a slide rail. The sliding cover 4 is in the shape of a 2 / 5 arc, and its inner diameter is slightly larger than the outer diameter of the catheter 3, so that it can fit tightly with the catheter 3. The sliding cover 4 can move up and down along the slide rail to open or cover the aggregate discharge port 302.

[0038] The conduit 3 is provided with a rail groove 304, and the sliding cover 5 is provided with a slider 401. The slider 401 and the rail groove 304 cooperate with each other. The rail groove 304 is a groove on the conduit 3, and the rail groove 304 is arranged along the length direction of the conduit 3. The slider 401 is a protrusion on the sliding cover 4, and the slider 401 is arranged along the length direction of the sliding cover 4.

[0039] In some embodiments of the utility model, a first baffle 303 is provided in the upper part of the conduit 3. The first baffle 303 is an annular protrusion and is arranged along the circumferential direction of the outer wall of the conduit 3. When the sliding cover moves upward, the first baffle 303 can limit the position of the sliding cover.

[0040] A pull-up bolt 402 is disposed at the upper end of the sliding cover 4 , and the pull-up bolt 402 is symmetrically disposed on both sides of the sliding cover 4 .

[0041] In some embodiments of the utility model, the cross-section of the aggregate hopper 1 is oval-shaped, and its inner side is a slope. The bottom of the aggregate hopper 1 has an eccentric focal opening on one side with a taper of 30°. It is connected to the bone grafting tube 2 through the opening. There is a 2 mm long neck at the connection position, that is, the central axis of the bone grafting tube 2 passes through one of the centers of the cross-section of the aggregate hopper 1.

[0042] In some embodiments of the present invention, the spinal bone grafting funnel further comprises a bone grafting rod 5 , the outer diameter of which is slightly smaller than the inner diameter of the bone grafting tube 2 , and can be conveniently inserted into and matched with the bone grafting tube 2 .

[0043] The bone graft rod 5 includes a rod body 501 and a slide hammer 502 . The slide hammer 502 is sleeved on the rod body 501 and is loosely matched with the rod body 501 .

[0044] The bone graft rod further includes a second baffle 503 and a third baffle 504 . The second baffle 503 is arranged at the top of the bone graft rod 5 , and the third baffle 504 is arranged at the middle of the bone graft rod 5 . The slide hammer 502 is located between the second baffle 503 and the third baffle 504 .

[0045] The outer surface of the rod body 501 located at the second baffle 503 and the third baffle 504 is smooth, which is convenient for the sliding hammer 502 to slide freely. The sliding of the sliding hammer 502 drives the bone grafting rod 5 to squeeze out the bone material in the bone grafting tube 2, making it convenient to drive the bone blocks in the bone grafting tube to the intervertebral space, thereby avoiding blockage of the bone grafting tube and accelerating the bone grafting speed.

[0046] In some embodiments of the present invention, the surface of the rod body 501 is marked with scales in the area below the third baffle 504, the scale area is 50 mm long, and laser marks are made every 5 mm.

[0047] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A spinal bone graft funnel, characterized in that: It comprises a bone hopper and a bone grafting tube, wherein the bone hopper is connected with the bone grafting tube, and an observation window is arranged on the side of the lower end of the bone grafting tube; The lower end of the bone grafting tube is also provided with an aggregate discharge port; The bone graft tube comprises a guide tube and a sliding cover, and the guide tube and the sliding cover are slidably connected.

2. The spinal bone graft funnel according to claim 1, characterized in that: The observation window is marked with scales.

3. The spinal bone graft funnel according to claim 2, characterized in that: A first baffle is provided at the upper middle portion of the conduit. The first baffle is an annular protrusion and is arranged along the circumferential direction of the outer wall of the conduit.

4. The spinal bone graft funnel according to claim 2, characterized in that: The conduit is provided with a rail groove, the sliding cover is provided with a slider, the slider and the rail groove cooperate with each other, the rail groove is a groove on the conduit, the rail groove is arranged along the length direction of the conduit, the slider is a protrusion on the sliding cover, and the slider is arranged along the length direction of the sliding cover.

5. The spinal bone graft funnel according to claim 2, characterized in that: A pull bolt is provided at the upper end of the sliding cover, and the pull bolts are symmetrically arranged on both sides of the sliding cover.

6. The spinal bone graft funnel according to claim 1, characterized in that: The cross section of the aggregate hopper is oval-shaped, and the central axis of the bone grafting tube passes through one of the centers of the cross section of the aggregate hopper.

7. The spinal bone graft funnel according to claim 1, characterized in that: The spinal bone grafting funnel also includes a bone grafting rod, and the bone grafting rod cooperates with the bone grafting tube.

8. The spinal bone graft funnel according to claim 7, characterized in that: The bone grafting rod includes a rod body, a sliding hammer, a second baffle and a third baffle. The sliding hammer is sleeved on the rod body and is gap-matched with the rod body. The second baffle is arranged at the top of the rod body, and the third baffle is arranged in the middle of the rod body. The sliding hammer is located between the second baffle and the third baffle. The surface of the rod body below the third baffle is marked with scales.

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