CN114642822A - Epidural irrigation drainage tube for treating spinal cord injury or infection and using method thereof - Google Patents

Abstract

The invention relates to an epidural washing drainage tube for treating spinal cord injury or infection and a using method thereof.A main body of the washing drainage tube is divided into a first conveying channel and a second conveying channel which are parallel to each other by a longitudinal clapboard to form a double-cavity tube structure; after the flushing drainage tube passes through the dura mater sac, the flushing drainage tube covers the damaged focus through the inclined end surface of the inner water outlet and the position difference between the inner water outlet and the inner water inlet, and nutrient solution conveyed through the first conveying channel can directly flush and administer drug to the damaged focus in the dura mater, so that oxygen-containing nutrient solution, various nerve and blood vessel growth factors and antibiotics are provided for the damaged focus, and meanwhile, toxic substances such as local free radicals, inflammatory factors, bacteria and the like are guided out, thereby creating a microenvironment suitable for cell repair and regeneration and blood vessel regeneration for the damaged focus; the cross-section outline of the flushing drainage tube main body is of an olive-shaped structure, the transverse diameter is short, and the puncture hole of the duramater sac can be closed after the tube is pulled out; simple structure, convenient operation, safety and reliability.

Description

Epidural irrigation drainage tube for treating spinal cord injury or infection and using method thereof

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an epidural irrigation drainage tube for treating spinal cord injury or infection and a using method thereof.

Background

The spinal cord is a channel connecting central nerves and peripheral nerves, and is a key link for transmitting brain commands to various parts of the human body. Spinal cord injury is usually the result of external shock to the spine, and can also be the result of inflammation, tumor, vasculopathy and other diseases.

Spinal cord injuries, diseases and infections severely threaten human health, and the consequences of continued development are often paraplegia or death, but no ideal treatment is currently available. One key cause is the vascular embolism of the lesion, ischemia, hypoxia, and the increase of factors such as free radicals, inflammatory factors, bacteria, etc., which are unfavorable for the recovery of nerve cells, with the consequence that more and more nerve cells die (apoptosis).

On the basis of early rehabilitation training of basic nursing, three major complications prevention and the like, effective medical treatment means are required to be combined so as to strive for obtaining the optimal rehabilitation treatment effect.

However, due to the deep-hidden nature of the anatomical site and the complex and delicate self-structural features of the anatomical site, the prior art lacks an effective measure and apparatus for directly and continuously flushing and administering the drug into the dura mater after the dura mater is penetrated.

Disclosure of Invention

In order to solve the above problems in the prior art, the present invention aims to provide an epidural irrigation drainage tube for treating spinal cord injury or infection and a use method thereof, which can directly irrigate and administer drug to the injury focus in the dura after penetrating through the dura mater sac, and has the advantages of simple structure, convenient operation, safety and reliability.

The technical scheme adopted by the invention is as follows:

an epidural washing drainage tube for treating spinal cord injury or infection comprises a washing drainage tube main body, wherein the cross section outline of the washing drainage tube main body is of an olive-shaped structure, a longitudinal partition plate extending along the length direction of the washing drainage tube main body is arranged in the washing drainage tube main body, and the longitudinal partition plate divides the inner cavity of the washing drainage tube main body into a first conveying channel and a second conveying channel; the outer end of the first conveying channel is an outer water inlet, the inner end of the first conveying channel is an inner water outlet, the outer end of the second conveying channel is an outer water outlet, and the inner end of the second conveying channel is an inner water inlet.

The cross-sectional area of the first conveying passage is smaller than that of the second conveying passage.

The inner end of the longitudinal partition plate is cut along the length direction and then a section of material is removed, and the wall part of the inner end of the second conveying channel is also cut in a circular mode to remove a section of material, so that the position difference between the inner water outlet and the inner water inlet is formed in the length direction of the drainage tube main body.

The end face of the inner water outlet obliquely extends along the inward direction from the central line of the longitudinal partition plate.

The end face of the inner water inlet extends obliquely from the center line of the longitudinal partition plate to the outer direction.

The inclination angle of interior delivery port terminal surface is greater than the inclination of interior water inlet terminal surface.

The outer end of the longitudinal partition plate is also divided into two halves after being cut for a distance along the length direction, so that the outer water inlet and the outer water outlet are separated from each other.

The positions of the main body of the washing drainage tube, which are close to the two ends of the olive-shaped section, form two ridge lines, and the materials of the main body of the washing drainage tube at least in the two ridge line areas contain developing materials.

The main body of the irrigation drainage tube is made of a flexible material with certain rigidity; a bent section is arranged at a position, close to the inner end, of the washing drainage tube main body.

The use method of the epidural space irrigation drainage tube for treating spinal cord injury or infection comprises the following steps:

the first step is as follows: preparing a pipe;

determining the position and range of the lesion focus according to the image of magnetic resonance, performing adaptive sectioning and circular cutting on the inner end of a second conveying channel of the flushing drainage tube, wherein the shortened length of the material cut from the inner end of the second conveying channel is less than the length of the lesion focus;

the second step is that: irrigating and implanting a drainage tube;

when the spinal cord injury needs to be reduced by the operation, the flushing drainage tube is implanted under the condition of direct vision in the operation, or the flushing drainage tube is implanted under the condition of minimally invasive spinal endoscope;

when the spinal cord injury is not needed to be reduced by operation, the flushing drainage tube is brought into the dural sac by adopting the metal trocar for percutaneous puncture; or the hard capsule is implanted into the spinal cord by percutaneous puncture under the support of the metal tube core, and reaches the surface of the lesion focus of the spinal cord;

judging the puncture depth of the washing drainage tube through X-ray and ultrasonic, or judging the puncture depth of the washing drainage tube according to the presence or absence of cerebrospinal fluid in the back pumping;

the third step: flushing, administration and drainage;

the outer water inlet of the first conveying channel is connected with a flushing fluid conveying pipe, and meanwhile, oxygen-containing nutrient solution is continuously conveyed through the flushing fluid conveying pipe, the nutrient solution is rich in nerve growth factors, blood vessel growth factors and antibiotics, administration treatment is carried out on the damaged focus through the nutrient solution, and meanwhile, harmful substances such as free radicals, inflammatory factors, bacteria and the like in the damaged focus are washed away from the damaged focus; connecting an outlet nozzle of the second conveying channel with a negative pressure drainage device, and sucking, draining and outputting liquid containing harmful substances such as free radicals, inflammatory factors, bacteria and the like after the lesion is washed through the negative pressure drainage device;

the fourth step: continuously washing, dosing and draining;

continuously washing the lesion focus for a certain time through the washing drainage tube until drainage liquid output from an outer water outlet of the second conveying channel is in a clear and clean state;

the fifth step: repeating the fourth step according to the treatment plan during the treatment cycle;

and a sixth step: the washing drainage tube is pulled out;

after the treatment period is finished and the self circulation of the spinal cord is reestablished, firstly, the flushing drainage tube is pulled out of the dura mater in vitro, and after a proper amount of albumin glue is injected to block the rupture of the dura mater sac, the flushing drainage tube is completely pulled out;

the seventh step: the rehabilitation and rest for 6-8 weeks, and the puncture hole of the epidural sac caused by the drainage tube to be flushed is closed.

The invention has the beneficial effects that:

an epidural washing drainage tube for treating spinal cord injury or infection and a using method thereof.A main body of the washing drainage tube is divided by a longitudinal clapboard into a first conveying channel and a second conveying channel which are parallel to each other to form a double-cavity tube structure; after the flushing drainage tube passes through the dura mater sac, the flushing fluid is conveyed through the first conveying channel, so that the damaged focus in the dura mater can be directly flushed and treated by administration, oxygen-containing nutrient solution, various nerve and blood vessel growth factors and antibiotics are provided for the damaged focus, and toxic substances such as local free radicals, inflammatory factors, bacteria and the like are guided out, so that a microenvironment suitable for cell repair and regeneration and blood vessel regeneration is created for the damaged focus; the cross section of the flushing drainage tube main body is of an olive-shaped structure, the transverse diameter is short, and the puncture hole of the dural sac is closed after the tube is pulled out; simple structure, convenient operation, safety and reliability.

Drawings

FIG. 1 is a schematic view of an epidural space irrigation drainage tube for treating spinal cord injury or infection according to an embodiment of the invention;

FIG. 2 is a schematic view of an epidural space irrigation drainage tube for treating spinal cord injury or infection according to a second embodiment of the invention;

fig. 3 is a structural schematic diagram of the epidural space flushing drainage tube implanted into the dural sac for flushing drainage application for treating spinal cord injury or infection according to the second embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.

As shown in fig. 1, the present invention provides an epidural irrigation drainage tube for treating spinal cord injury or infection, the overall plan scheme is:

firstly, arranging a flushing drainage tube main body, and arranging the outer contour of the cross section of the flushing drainage tube main body into a closed two-dimensional graph consisting of two minor arcs, namely an olive-shaped structure, so as to reduce the transverse diameter and facilitate the closing of a hard capsule after tube drawing; a longitudinal partition plate extending along the length direction of the main body of the washing drainage tube is arranged in the main body of the washing drainage tube, and the inner cavity of the main body of the washing drainage tube is divided into a first conveying channel and a second conveying channel which are parallel to each other through the longitudinal partition plate, so that the main body of the washing drainage tube forms a double-cavity tube structure; the outer end of the first conveying channel is set as an outer water inlet 3, the inner end (corresponding to a focus end) of the first conveying channel is set as an inner water outlet 1, the outer end of the second conveying channel is set as an outer water outlet 4, and the inner end of the second conveying channel is set as an inner water inlet 2; after the inner end of the irrigation drainage tube main body is punctured and implanted into the dural sac through an operation or other guiding modes, the outer water inlet 3 can be connected with an outer irrigation liquid conveying pipe, and irrigation liquid is conveyed to the inner water outlet 1 through the first conveying channel and is output, so that the injury focus of the spinal cord is irrigated and dosed; the water outlet 4 can be connected with an external negative pressure drainage device so as to drain and pump out flushing liquid for flushing the damaged focus of the spinal cord through an inner water inlet of the second conveying channel; the flushing fluid provides oxygen-containing nutrient solution, various nerve and blood vessel growth factors and antibiotics for the injured focus, and simultaneously leads out toxic substances such as local free radicals, inflammatory factors, bacteria and the like, thereby creating a microenvironment suitable for cell repair and regeneration and blood vessel regeneration for the injured focus remodeling; the irrigation drainage tube can directly perform irrigation and drug administration treatment on the lesion focus in the dura mater, the cross-section outer contour of the irrigation drainage tube main body is of an olive-shaped structure, the transverse diameter is short, and the closure of a puncture hole of a dura mater sac is facilitated after the tube is pulled out; simple structure, convenient operation, safety and reliability.

Further, setting the cross-sectional area of the first delivery channel to be smaller than the cross-sectional area of the second delivery channel can prevent blood clot clogging.

The outer end of the longitudinal partition plate is cut for a certain distance along the length direction, namely the outer end of the longitudinal partition plate is divided into two half parts, so that the outer water inlet 3 and the outer water outlet 4 can be mutually attached or separated according to the use requirements, and the operation of a trocar or the operation of loading and separating a needle core is facilitated. The length of the main body of the washing drainage tube can be adaptively selected and set according to actual use requirements.

The first embodiment is the basic structure of the present invention.

As shown in fig. 2 to 3, an epidural space irrigation drainage tube for treating spinal cord injury or infection according to the second embodiment of the invention, on the basis of the first embodiment,

furthermore, a section of material is removed after sectioning the inner end of the longitudinal partition plate along the length direction, a section of material is also removed through circular cutting on the inner end wall part of the second conveying channel, namely, the second conveying channel is cut short for a certain distance to form a second inner water inlet 5, so that a position difference is formed between the inner water outlet 1 and the second inner water inlet 5 in the length direction of the drainage tube main body, the position difference can be adaptively selected according to the length of a spinal cord injury focus, and a backflow path of flushing liquid outputted by the inner water outlet 1 to the second inner water inlet 5 can cover the whole spinal cord injury focus.

Furthermore, the end face of the inner water outlet 1 is arranged to extend obliquely along the inward direction from the central line of the longitudinal partition plate, namely the inner end face of the inner water outlet 1 is an inclined plane, and the inner water outlet 1 is combined with an olive-shaped structure for flushing the section of the drainage tube main body, so that the inner water outlet 1 forms a wedge-shaped tip with a guiding function, the puncture is facilitated, the entry into a hard membrane sac is facilitated, and meanwhile, the guiding function is also provided for flushing liquid.

Will the terminal surface of water inlet 5 also sets up to the outside direction slope extension of the central line from the longitudinal baffle in the second, and the interior terminal surface of water inlet 5 also is the inclined plane in the second promptly, combines to wash the olive shape structure of the cross-section of drainage tube main part for interior delivery port 1 forms the domatic that has the guide effect, is convenient for cut off and collects the flush fluid.

And the inclination of 5 terminal surfaces of water inlet sets up to be greater than the inclination of interior water inlet terminal surface in the second, further improves the guide and the effect of damming to the washing liquid.

Furthermore, two ridge lines are formed at positions of the main body of the washing drainage tube close to two ends of the olive-shaped section, and developing materials, such as iodine components, are added into materials of the main body of the washing drainage tube at least in the area of the two ridge lines; or developing the material for washing the drainage tube main body; for example, the iodine component is added in its entirety to facilitate visualization under X-rays to monitor the position of the wash drain body.

Finally, the irrigation drainage tube body is made of a flexible material with certain rigidity;

the flexible material with certain rigidity can directly select corresponding polymer medical materials or metal medical materials in the prior art, such as a high-quality PTFE thin-wall tube applied to a medical catheter;

or a microcatheter component of the prior art having multiple metal and non-metal composite layers, a braided sandwich of PTFE and metal;

or a prior art guiding catheter component such as an inner PTFE, middle stainless steel or tungsten wire braid, outer Pebax or pe (hytrel) guiding catheter component;

or a medical stainless steel spring tube, etc.

An arc bending section is arranged at the position of the main body of the washing drainage tube close to the inner end; so that when the flushing drainage tube is punctured and implanted into the dural sac, the tip of the inner water outlet 1 of the flushing drainage tube is close to the inner wall of the dural sac as much as possible, and the spinal cord is prevented from being pressed.

The epidural irrigation drainage tube for treating spinal cord injury or infection provided by the invention is directly punctured into the dura mater to provide oxygen and nutrient supply of a focus and supply of various growth factors and blood vessel growth factors. Meanwhile, the factors which are not beneficial to the growth of cells, such as free radicals, toxins, inflammatory factors, bacteria and the like, are washed away. The double-tube design of the first conveying channel and the second conveying channel which are parallel to each other avoids the defects that the intersection of the inner tube and the outer tube is easily blocked by thrombus and is difficult to pass through an outer sleeve needle or a needle core in the existing inner and outer tube design.

As shown in fig. 3, the irrigation drain 6 is obliquely advanced into the dural sac 8 to reach the surface of the lesion 7 on the surface of the spinal cord 9.

The invention relates to a using method of an epidural washing drainage tube for treating spinal cord injury or infection, which comprises the following steps:

firstly, preparing a tube;

determining the position and range of the lesion focus according to the image of magnetic resonance, performing adaptive sectioning and circular sectioning on the inner end of a second conveying channel of the flushing drainage tube, wherein the shortened length of the material excised from the inner end of the second conveying channel is slightly smaller than the length of the lesion focus;

secondly, irrigating the drainage tube for implantation;

when the spinal cord injury needs to be reduced by the operation, the flushing drainage tube is implanted under the condition of direct vision in the operation, or the flushing drainage tube is implanted under the condition of minimally invasive spinal endoscope;

when the spinal cord injury is not needed to be reduced by operation, the flushing drainage tube is brought into the dural sac by adopting the metal trocar for percutaneous puncture; or the hard capsule is inserted into the hard capsule by percutaneous puncture under the support of the metal tube core to reach the surface of the damaged focus of the spinal cord

Judging the puncture depth of the washing drainage tube through X-ray and ultrasonic, or judging the puncture depth of the washing drainage tube according to the presence or absence of cerebrospinal fluid in the back pumping;

thirdly, flushing, dosing and draining;

the outer water inlet of the first conveying channel is connected with a flushing fluid conveying pipe, and meanwhile, oxygen-containing nutrient solution is continuously conveyed through the flushing fluid conveying pipe, the nutrient solution is rich in nerve growth factors, blood vessel growth factors and antibiotics, administration treatment is carried out on the damaged focus through the nutrient solution, and meanwhile, harmful substances such as free radicals, inflammatory factors, bacteria and the like in the damaged focus are washed away from the damaged focus; and connecting an water outlet of the second conveying channel with a negative pressure drainage device, and sucking, draining and outputting the liquid containing harmful substances such as free radicals, inflammatory factors, bacteria and the like after the lesion is washed by the negative pressure drainage device.

Fourthly, continuously washing, dosing and draining;

continuously washing the lesion focus for a certain time through the washing drainage tube until drainage liquid output from an outer water outlet of the second conveying channel is in a clear and clean state; the drainage liquid can be continuously recycled after being filtered to remove harmful substances;

a fifth step of repeating the fourth step according to the treatment plan during the treatment cycle;

sixthly, washing the drainage tube and removing the drainage tube;

after the treatment period is finished, after the self circulation of the spinal cord is reestablished (the improvement of the nerve function can be observed, and the judgment can be carried out without relapse after the flow is reduced), firstly, the flushing drainage tube is pulled out to the outside of the dura mater in vitro, and after a proper amount of protein gel is injected to block the rupture of the dura mater sac, the flushing drainage tube is completely pulled out;

and seventhly, closing the puncture hole caused by the drainage tube to the dura mater sac after rehabilitation and rest for 6-8 weeks.

The invention relates to an epidural space irrigation drainage tube for treating spinal cord injury or infection, wherein a main body of the epidural space irrigation drainage tube is divided into a first conveying channel and a second conveying channel which are parallel to each other by a longitudinal partition board to form a double-cavity tube structure; after the flushing drainage tube passes through the dura mater sac, the flushing drainage tube covers the damaged focus through the inclined end surface of the inner water outlet and the position difference between the inner water outlet and the inner water inlet, and nutrient solution conveyed through the first conveying channel can directly flush and administer drug to the damaged focus in the dura mater, so that oxygen-containing nutrient solution, various nerve and blood vessel growth factors and antibiotics are provided for the damaged focus, and meanwhile, toxic substances such as local free radicals, inflammatory factors, bacteria and the like are guided out, thereby creating a microenvironment suitable for cell repair and regeneration and blood vessel regeneration for the damaged focus; the cross section of the flushing drainage tube main body is of an olive-shaped structure, the transverse diameter is short, and the puncture hole of the dural sac is closed after the tube is pulled out; simple structure, convenient operation, safety and reliability.

The invention discloses an epidural washing drainage tube (called as washing drainage tube for short) for treating spinal cord injury or infection, which consists of two parallel independent conveying channels and is characterized in that: the two pipes are parallel, the X-ray can be seen, the two pipes can be combined and separated, the cross section of the pipe is olive-shaped, the inner end of the pipe is bent to the back side by a certain angle, and the outer water inlet 3 and the outer water outlet 4 at the outer end are staggered by a certain distance. Can be implanted outside the spinal cord in the dura mater in the mode of open surgery, minimally invasive endoscope or percutaneous puncture. The purpose of continuously improving the microenvironment is achieved by injecting oxygen-containing nutrient solution, antibiotics, nerve and blood vessel growth factors and simultaneously draining harmful substances such as free radicals, toxic factors, bacteria and the like. After self circulation is established, the flushing and guiding tube can be pulled out to the outside of the dura mater in vitro, a proper amount of albumin glue is injected, and then the flushing and guiding tube is completely pulled out. The dural sac heals with closure after 6 to 8 weeks.

The material or partial material of the punching and guiding tube, such as the iodine contained in the upper and lower ridge lines, can be developed under X-ray to monitor the position.

Compared with the prior art, the invention directly enters into the hard film to provide oxygen and nutrient supply of the focus and supply of various growth factors and blood vessel growth factors. Meanwhile, the factors which are unfavorable for cell growth, such as free radicals, toxins, inflammatory factors, bacteria and the like are washed away. The parallel tube design avoids the defects that the intersection of the inner tube and the outer tube is easy to be blocked by thrombus and difficult to pass through an outer sleeve needle or a needle core in the existing inner and outer tube design.

The first conveying channel and the second conveying channel are independent and parallel to each other. The intermediate longitudinal partition may be split from the middle. The outer water inlet 3 and the outer water outlet 4 at the outer end can be separated or closed. The irrigation and drainage tube can be implanted into the dural sac 9 by a well-established method to reach the surface of the lesion 7 of the spinal cord 8.

The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (10)

1. An epidural washing drainage tube for treating spinal cord injury or infection, which is characterized in that: the washing drainage tube comprises a washing drainage tube main body, wherein the outer profile of the cross section of the washing drainage tube main body is of an olive-shaped structure, a longitudinal partition plate extending along the length direction of the washing drainage tube main body is arranged in the washing drainage tube main body, and the longitudinal partition plate divides the inner cavity of the washing drainage tube main body into a first conveying channel and a second conveying channel; the outer end of the first conveying channel is an outer water inlet (3), the inner end of the first conveying channel is an inner water outlet (1), the outer end of the second conveying channel is an outer water outlet (4), and the inner end of the second conveying channel is an inner water inlet (2).

2. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 1, wherein: the cross-sectional area of the first conveying passage is smaller than that of the second conveying passage.

3. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 2, wherein: the inner end of the longitudinal partition plate is cut along the length direction and then a section of material is removed, and the wall part of the inner end of the second conveying channel is also cut in a circular mode to remove a section of material, so that the position difference is formed between the inner water outlet (1) and the inner water inlet (2) in the length direction of the drainage tube body.

4. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 3, wherein: the end face of the inner water outlet (1) extends along the inward direction from the center line of the longitudinal partition plate in an inclined mode.

5. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 4, wherein: the end surface of the inner water inlet (2) extends obliquely from the center line of the longitudinal partition plate in the outward direction.

6. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 5, wherein: the inclination angle of the end face of the inner water outlet (1) is larger than that of the end face of the inner water inlet (2).

7. The epidural irrigation drainage tube for treating spinal cord injury or infection according to any one of claims 1 to 5, wherein: the outer end of the longitudinal partition plate is divided into two halves after being cut for a distance along the length direction, so that the outer water inlet (3) and the outer water outlet (4) are separated from each other.

8. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 1, wherein: the main body of the irrigation drainage tube is made of a flexible material with certain rigidity; a bent section is arranged at a position, close to the inner end, of the washing drainage tube main body.

9. The epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 8, wherein: the positions of the main body of the washing drainage tube, which are close to the two ends of the olive-shaped section, form two ridge lines, and the materials of the main body of the washing drainage tube at least in the two ridge line areas contain developing materials.

10. A method of using an epidural irrigation drainage tube for treating spinal cord injury or infection according to claim 1, wherein: the method comprises the following steps:

the first step is as follows: preparing a pipe;

determining the position and range of the lesion focus according to the image of magnetic resonance, performing adaptive sectioning and circular cutting on the inner end of a second conveying channel of the flushing drainage tube, wherein the shortened length of the material cut from the inner end of the second conveying channel is less than the length of the lesion focus;

the second step is that: irrigating and implanting a drainage tube;

when the spinal cord injury needs to be reduced by the operation, the flushing drainage tube is implanted under the condition of direct vision in the operation, or the flushing drainage tube is implanted under the condition of minimally invasive spinal endoscope;

when the spinal cord injury is not needed to be reduced by operation, the flushing drainage tube is brought into the dural sac by adopting the metal trocar for percutaneous puncture; or the hard capsule is implanted into the spinal cord by percutaneous puncture under the support of the metal tube core, and reaches the surface of the lesion focus of the spinal cord;

judging the puncture depth of the washing drainage tube through X-ray and ultrasonic, or judging the puncture depth of the washing drainage tube according to the presence or absence of cerebrospinal fluid in the back pumping;

the third step: flushing, administration and drainage;

the outer water inlet of the first conveying channel is connected with a flushing fluid conveying pipe, and meanwhile, oxygen-containing nutrient solution is continuously conveyed through the flushing fluid conveying pipe, the nutrient solution is rich in nerve growth factors, blood vessel growth factors and antibiotics, administration treatment is carried out on the damaged focus through the nutrient solution, and meanwhile, harmful substances such as free radicals, inflammatory factors, bacteria and the like in the damaged focus are washed away from the damaged focus; connecting an outlet nozzle of the second conveying channel with a negative pressure drainage device, and sucking, draining and outputting liquid containing harmful substances such as free radicals, inflammatory factors, bacteria and the like after the lesion is washed through the negative pressure drainage device;

the fourth step: continuously washing, dosing and draining;

continuously washing the lesion focus for a certain time through the washing drainage tube until drainage liquid output from an outer water outlet of the second conveying channel is in a clear and clean state;

the fifth step: repeating the fourth step according to the treatment plan during the treatment cycle;

and a sixth step: pulling out the flushing drainage tube;

after the treatment period is finished and the self circulation of the spinal cord is reestablished, firstly, the flushing drainage tube is pulled out of the dura mater in vitro, and after a proper amount of albumin glue is injected to block the rupture of the dura mater sac, the flushing drainage tube is completely pulled out;

the seventh step: the rehabilitation and rest for 6-8 weeks, and the puncture hole of the epidural sac caused by the drainage tube to be flushed is closed.

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