CN110037767A - Interverbebral disc Minimally Invasive Surgery channel device and rotary cut device - Google Patents

Abstract

The invention discloses an intervertebral disc minimally invasive surgery channel device, which comprises a connector, a channel conduit connected with the connector at one end, and an inner conduit inserted in the connector and the channel conduit; the inner conduit is axially provided with a first channel, One end of the inner catheter passes through the channel catheter, and an expansion part capable of expanding and deflating the balloon is provided at the end. The invention is a combination of various tools to form a channel device. The balloon gas is filled to achieve the effect of separating the bulging part of the intervertebral disc from the adjacent nerves, blood vessels and other important tissues, reducing the risk of surgery, and at the same time, the channel device itself can also be used as a safety device. The guide rod is used to move the intervertebral disc herniation to the required position, which can improve the safety and expand the scope of the minimally invasive surgery of the intervertebral disc. At the same time, a rotary cutter using the minimally invasive surgical channel device for the intervertebral disc is also provided.

Description

Intervertebral disc minimally invasive surgery channel and rotary cutter

technical field

The invention relates to the field of medical instruments, in particular to a minimally invasive surgical channel device and a rotary cutter for an intervertebral disc.

Background technique

An important part of the treatment of intervertebral disc herniation is decompression. At present, various spinal minimally invasive surgical instruments use this principle for treatment. By removing part or most of the protruding nucleus pulposus tissue, effective mechanical decompression is performed, so as to achieve surgical Surgery has the same effect. After the successful completion of the minimally invasive intervertebral disc surgery, most patients can get immediate results, the pain disappears or relieves, and the corresponding nerve compression test changes from positive to negative. At the same time, due to the simple operation, small trauma, quick recovery, and little impact on the stability of the spine, this technique has been gradually accepted and chosen by the majority of patients and medical workers.

Spinal minimally invasive surgical instruments currently mainly include minimally invasive electric disc decompressors and intervertebral disc forceps. The minimally invasive electric intervertebral disc decompressor was originally developed by the American Stryker Company and was introduced into China in 2005. It has been widely used and achieved certain clinical effects, but both devices have shortcomings.

Both devices suffer from a limited range of operation. Since the working channel is percutaneously punctured by the guide tube to the affected area, its maximum diameter is only 2.5mm, and the spinal nerve is very sensitive to pain stimulation. However, it is still difficult to accurately separate the affected area from nerves and blood vessels. If the removed tissue is in close contact with nearby nerves and blood vessels, the surgical operation has the risk of nerve damage and bleeding, resulting in nerve root damage and bleeding-related complications. . Among them, the problem of the intervertebral disc clamping device is particularly prominent, because it uses a clamping method to remove the bulging or herniated intervertebral disc tissue, and it is easy to contact or clamp the nerve or blood vessel adjacent to the bulging or herniated intervertebral disc tissue.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a minimally invasive surgical channel device for the intervertebral disc, as the core channel device of the combined tool, which can separate the protruding intervertebral disc tissue from the adjacent nerves, blood vessels and other important tissues through the filling of the balloon gas. , reduce the risk of surgery, and at the same time, the channel device itself can also be used as a safe guide rod, so that the bulging or herniated intervertebral disc can be displaced to the required position, which can improve the operability and expand the scope of use.

For achieving the above object, the technical scheme adopted in the present invention is as follows:

An intervertebral disc minimally invasive surgery channel device includes a connecting head, a channel conduit connected with the connecting head at one end, and an inner conduit passing through the connecting head and the channel conduit; the inner conduit is axially provided with a first channel, and the inner conduit One end of the tube passes through the channel catheter, and an expansion part that can be expanded and contracted is arranged at the end.

Further, the other end of the inner conduit passes through the connector.

Still further, a second channel is formed between the inner conduit, the channel conduit and the connecting head.

Further, the expansion part is a balloon and is arranged around the outer wall of the inner catheter, two sides of the balloon are respectively connected with the inner catheter and the channel catheter, and form a sealed space, and the second channel is communicated with the sealed space, The second channel is provided with an inflation port.

Further, the connecting head is a Y-type three-way joint, the channel conduit is connected with the confluence pipe of the Y-type three-way joint, and the inner conduit extends to the outside through a branch pipe of the Y-type three-way joint, The other branch pipe of the Y-type three-way joint is communicated with the inflation port.

Furthermore, the branch pipe through which the inner conduit is passed through the Y-shaped tee joint is provided with a sealing portion for sealing the second passage.

Based on the foregoing content, the present invention also provides a rotary cutter using the aforementioned minimally invasive surgical channel device for intervertebral discs, which includes a rotary cutter connected to a branch tube with an inner conduit through a Y-shaped tee joint, and a rotary cutter connected to the Y-shaped tee Another branch pipe of the joint is connected to an inflation and deflation mechanism for inflating and deflating the balloon, and the rotary cutting mechanism passes through the first channel and extends to the outside of the first channel.

Further, the rotary cutting mechanism includes a rotary cutting needle, the output end is connected with the rotary cutting needle, and a rotary cutting handle used to drive the rotary cutting needle to rotate is arranged at the end of the rotary cutting handle and used to adjust the rotational speed of the rotary cutting needle. A regulator, and an adapter connecting the rotary cutting handle and the Y-shaped tee joint through the branch pipe of the inner conduit; the rotary cutting needle passes through the first channel and extends to the outside of the first channel.

Still further, the adapter is provided with a handle that is convenient to hold when the needle is inserted.

Further, the inflation and deflation mechanism includes an inflation and deflation switch connected with another branch pipe of the Y-type tee joint, a hose joint connected with the inflation and deflation switch, an inflation hose connected with the hose joint, and The inflation and deflation handle connected to the inflation hose, and the pressure gauge for displaying the air pressure in the balloon.

Compared with the prior art, the present invention has the following beneficial effects:

The channel device of the present invention is used as the core channel device of the combined tool. A balloon is set at the end, and the balloon is inflated by gas filling. The inflated balloon makes the bulged part or the protruding intervertebral disc tissue important to the adjacent nerves, blood vessels, etc. The function of tissue structure separation reduces the risk of surgery; the inner catheter is set with the first channel as the working channel, and with the Y-type tee joint, it can be equipped with the existing electric drills, manual or electric planing, and forceps on the market. The intervertebral disc minimally invasive surgical channel device itself can also be used as a safe guide rod, so that the protruding intervertebral disc tissue can be displaced to a required position, which can improve safety and expand the scope of use, and has important clinical application value.

Description of drawings

FIG. 1 is a schematic structural diagram of a channel device according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an inner catheter according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of the structure of a channel device according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a rotary cutter according to an embodiment of the present invention.

Fig. 5 is a partial enlarged view of the balloon part of the rotary cutter according to the embodiment of the present invention

Among them, the names corresponding to the reference signs are:

1-Connector, 2-Channel catheter, 3-Expansion part, 4-Rotary cutting needle, 5-Rotary cutting handle, 6-Rotation speed regulator, 7-Adapter, 8-Handle, 9-Inflation switch, 10 -Hose connector, 11- inflation hose, 12 inflation and deflation handle, 13- pressure gauge, 14- inner conduit, 21- first channel, 22- second channel, 23- sealing part.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present invention will be further described below with reference to the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

Example

As shown in FIG. 1 to FIG. 3 , this embodiment provides a minimally invasive surgical channel for intervertebral disc. It should be noted that the sequence numbers such as "first", "second", and "third" in this embodiment are only used In order to distinguish similar components, it cannot be understood as a specific limitation on the scope of protection. In addition, azimuth terms such as "bottom", "top" and "side edge" in the present embodiment are explained based on the drawings.

The intervertebral disc minimally invasive surgery channel device includes a connector 1, a channel catheter 2 connected with the connector 1 at one end, and an inner catheter 14 that penetrates the connector 1 and the channel catheter 2; the inner catheter 14 is axially provided with a first In the channel 21, one end of the inner catheter 14 passes through the channel catheter 2, and an expansion part 3 which can be expanded and contracted is provided at the end.

Wherein, the other end of the inner conduit 14 protrudes out of the connector 1 . A second channel 22 is formed between the inner duct 14, the channel duct 2 and the connector 1, the inner duct 14 is coaxially arranged with the channel duct 2 and the connector 1, and the inner duct 14 is connected to the inner wall of the channel duct 2 and the connector 1 by setting The ridges are firmly attached (not shown in the figure). The expansion part 3 is a balloon, and is arranged around the outer wall of the inner catheter 14. The balloon is made of medical elastic plastic. The two sides of the balloon are respectively connected with the inner catheter 14 and the channel catheter 2 to form a sealed space. The sealed space is connected, the second channel 22 is provided with an inflation port, which is convenient for inflating the balloon, and the first channel 21 functions as a working channel.

The connector 1 is a Y-type three-way joint, and the channel conduit 2 is connected with the confluence pipe of the Y-type three-way joint. Specifically, the conduit conduit 2 and the confluence pipe of the Y-type three-way joint are integrally formed, and the diameter of the passage conduit 2 is smaller than that of the Y-type three-way joint. It is convenient to pass through the channel device to the designated position. The inner conduit 14 extends to the outside through a branch pipe of the Y-type three-way joint, and the other branch pipe of the Y-type three-way joint is communicated with the inflation port, that is, the The branch pipe is communicated with the second channel 22, so that the balloon can be inflated with an external inflatable device. The branch pipe of the Y-type tee joint through which the inner conduit 14 is provided is provided with a sealing portion 23 that seals the second channel 22. The sealing portion 23 makes the second channel 22 airtight and can quickly inflate the balloon to open the balloon. The sealing portion 23 may be a soft material that tightly wraps the inner conduit 14 to form a seal. The ends of the two branch pipes of the Y-type three-way joint are provided with internal threads to facilitate connection with other devices. Of course, other connection methods can also be used.

The intervertebral disc minimally invasive surgical channel device is used as the core channel device of the combined tool. A balloon is set at the end, and the balloon is inflated by gas filling. The inflated balloon makes the protruding intervertebral disc tissue and adjacent nerves, blood vessels and other important tissue structures The role of separation, reducing the risk of surgery. Under the guidance of the intervertebral disc minimally invasive surgical channel device, it can be equipped with electric drills, manual or electric planing, forceps removal devices, etc. currently on the market. At the same time, the intervertebral disc minimally invasive surgical channel device itself can also be used as a safe guide rod When used, the herniated intervertebral disc tissue can be displaced to the required position, which can improve the safety and expand the scope of use, and has important clinical application value.

As shown in FIGS. 4 to 5 , the rotary cutter using the minimally invasive surgical channel device for the intervertebral disc of the foregoing embodiment includes a rotary cutting mechanism connected to the branch tube with the inner conduit 14 through the Y-shaped tee joint, and a rotary cutter connected to The Y-type tee joint is connected to another branch pipe and is used for the inflation and deflation mechanism of the balloon, and the rotary cutting mechanism passes through the first channel 21 and extends to the outside of the first channel 21 .

Specifically, the rotary cutting mechanism includes a rotary cutting needle 4, the output end is connected to the rotary cutting needle 4, and a rotary cutting handle 5 used to drive the rotary cutting needle 4 to rotate is arranged at the end of the rotary cutting handle 5 and used to adjust the rotary cutting The rotational speed regulator 6 for the rotational speed of the needle 4, and the adapter 7 connecting the rotary cutting handle 5 and the Y-shaped tee joint through the branch pipe of the inner catheter 14; the rotary cutting needle 4 passes through the first channel 21 and extends to the first The outside of a channel 21, that is, the first channel 21 protrudes, the rotary cutting handle 5 is existing, and the rotary cutting handle 5 is provided with a motor, a power supply, etc. inside the rotary cutting handle 5, and the shell of the rotary cutting handle 5 has a switch. The end of the rotary cutting needle 4 passing through the first channel 21 is provided with a rotary cutting head, which is driven by the rotary cutting handle 5 to rotate and cut the protruding tissue, and the rotary cutting needle 4 is detachably connected to the output end of the rotary cutting handle 5. Easy to replace. The two ends of the adapter 7 are respectively threadedly connected with the rotary cutting handle 5 and the branch pipe of the Y-type three-way joint. The charging and discharging mechanism includes a charging and discharging switch 9 connected with another branch pipe of the Y-type tee joint, a hose joint 10 threadedly connected with the charging and discharging switch 9, and an inflating hose 11 inserted into the hose joint 10, The inflation and deflation handle 12 connected with the inflation hose 11 and the pressure gauge 13 for displaying the air pressure value in the balloon are arranged at the end of the inflation and deflation handle 12, and the pressure gauge 13 is a medical special pressure gauge.

In order to facilitate the hand holding when the needle is inserted, the adapter 7 is provided with a handle 8 .

When the rotary cutter of this embodiment is used, under the guidance of CT, the puncture needle is used to puncture the target position to establish a puncture channel. Insert the channel device through the puncture channel. When the channel device reaches the designated position, the balloon can be inflated. There are two ways to use it after inflation. One is to use the inflated balloon to push the bulged or herniated intervertebral disc tissue back to the intervertebral disc. It is used as a safety guide rod; the second is to directly use the inflated balloon to separate the bulging or herniated intervertebral disc tissue from the adjacent nerves and blood vessels, that is, it is used for the purpose of separation. Next, perform a CT scan to check whether the pushback or separation is satisfactory. If satisfied, pass the rotary cutting needle through the first channel and place it in the designated position for rotary cutting surgery. Turn on the corresponding rotary switch to perform rotary cutting of the herniated intervertebral disc. During the operation, closely monitor whether the patient has symptoms of nerve irritation and symptom relief. Take out the rotary cutting needle in time to observe the condition of the rotary intervertebral disc tissue and perform a CT scan for reexamination. The operation can be terminated after the relief and re-examination of CT shows that the disc herniation or herniation is ideally removed.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention. If the technical problem is still consistent with the present invention, it should be included within the protection scope of the present invention.

Claims (10)

1. intervertebral disc minimally invasive surgery channel device, it is characterized in that: comprise a connector, a channel conduit connected with the connector at one end, and an inner conduit arranged in the connector and the channel conduit; the inner conduit is axially provided with a first A channel, one end of the inner catheter passes through the channel catheter, and an expansion part that can be expanded and contracted is provided at the end. 2 . The intervertebral disc minimally invasive surgery channel device according to claim 1 , wherein the other end of the inner catheter passes through the connector. 3 . 3 . The intervertebral disc minimally invasive surgery channel device according to claim 2 , wherein a second channel is formed between the inner catheter, the channel catheter and the connecting head. 4 . 4. The intervertebral disc minimally invasive surgery channel device according to claim 3, wherein the expansion part is a balloon and is arranged around the outer wall of the inner catheter, and both sides of the balloon are respectively connected with the inner catheter and the channel catheter , and form a sealed space, the second passage is communicated with the sealed space, and the second passage is provided with an inflation port. 5. The intervertebral disc minimally invasive surgery channel device according to claim 4, wherein the connecting head is a Y-type three-way joint, the channel conduit is connected with the confluence pipe of the Y-type three-way joint, and the inner conduit One branch pipe passing through the Y-type three-way joint extends to the outside, and the other branch pipe of the Y-type three-way joint is communicated with the inflation port. 6 . The intervertebral disc minimally invasive surgery channel device according to claim 5 , wherein the branch pipe through which the inner conduit is passed through the Y-shaped three-way joint is provided with a sealing portion for sealing the second channel. 7 . 7. The rotary cutter using the minimally invasive surgery channel device for intervertebral disc according to claim 6, is characterized in that: comprising a rotary cutting mechanism connected with the branch pipe of the inner conduit through the Y-type three-way joint, and with the Y-type three-way joint. An inflation and deflation mechanism for inflating and deflating the balloon is connected to another branch pipe of the through joint, and the rotary cutting mechanism passes through the first channel and extends to the outside of the first channel. 8. The rotary cutter according to claim 7, wherein the rotary cutting mechanism comprises a rotary cutting needle, the output end is connected with the rotary cutting needle, and a rotary cutting handle used for driving the rotary cutting needle to rotate is arranged on the rotary cutting needle. A rotational speed regulator for adjusting the rotational speed of the rotary cutting needle at the end of the cutting handle, and an adapter connecting the rotary cutting handle and the Y-type tee joint through the branch pipe with the inner catheter; the rotary cutting needle passes through the first channel , and extends to the outside of the first channel. 9 . The rotary cutter according to claim 8 , wherein the adapter is provided with a handle which is convenient for holding the needle when the needle is inserted. 10 . 10 . The rotary cutter according to claim 9 , wherein the inflating and deflating mechanism comprises an inflating and deflating switch connected with another branch pipe of the Y-type three-way joint, and a hose connected with the inflating and deflating switch. 11 . A connector, an inflation hose connected to the hose connector, an inflation and deflation handle connected to the inflation hose, and a pressure gauge to display the air pressure in the balloon.