CN112971960A - Fence type endoscope fusion device adopting absorbable material and fusion method thereof - Google Patents
Fence type endoscope fusion device adopting absorbable material and fusion method thereof Download PDFInfo
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- A61B17/8852—Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
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- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8816—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
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Abstract
The invention discloses a fence-type endoscope fusion device adopting an absorbable material, which comprises an endoscope and a fusion assembly, wherein the fusion assembly comprises a balloon assembly, a bone cement input device and a bone grafting assembly, the balloon assembly comprises a balloon implantation assembly, an absorbable outer balloon and an inner balloon, the bone grafting assembly comprises a pressurized bone grafting funnel and a pressurized bone grafting rod, the balloon assembly is used for opening an intervertebral space and constructing a fence-type absorbable cement structure, the bone cement input device is used for injecting absorbable bone cement, and the bone grafting assembly is used for pressurized bone grafting.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a fence type endoscope fusion device adopting an absorbable material and a fence type endoscope fusion method adopting the absorbable material.
Background
In the last 30 years, with the improvement of the design of the internal fixation device of the spine and the improvement of the operation technology, the lumbar fusion technology is rapidly developed in the medical field. Although various fusion modes can achieve ideal clinical curative effect, the clinical findings show that the improvement of the fusion rate after the lumbar fusion is not necessarily accompanied with the improvement of the corresponding clinical curative effect, and the problem that how to make a correct choice in the face of various new fusion technologies becomes a trouble for spinal surgeons.
At the present stage, several considerations that need to be considered for the internal fixation technology are fused: 1. the size of the wound; 2. the fusion cage is used for resetting and supporting the upper vertebral body and the lower vertebral body; 3. bone bridge fusion efficiency; 4. and (4) stability. The trauma of the fusion internal fixation technology is gradually changed from opening a large incision to a small incision from the beginning, and a plurality of auxiliary fusion technologies under the endoscope of doctors exist at present, so that the trauma incision of the operation is smaller, and the fusion internal fixation technology belongs to minimally invasive surgery. The selection of the fusion cage is basically divided into a metal fusion cage made of titanium alloy, a fusion cage made of PEEK material and a fusion cage combined by titanium metal and PEEK material in the current market situation, the fusion cages have excellent biocompatibility, the structure cannot be easily changed, the elastic modulus is close to that of cortical bone, the stress effect is relieved to the maximum extent, and the stress borne by the bone is not completely borne by an implant, so that the bone is healthier and longer. However, the current internal fixation fusion cage has a serious problem that when you pursue corresponding minor trauma, you cannot select a fusion cage with a larger width to be placed, and the placement of a smaller fusion cage determines the size of the bone grafting space which can be born in the fusion cage due to the size of the fusion cage. Therefore, when the smaller fusion cage is selected, the fusion efficiency of the bone bridge of the patient after the operation and the stability before incomplete fusion are considered, and even after the fusion, the fusion cage can not move in a large range due to the fact that the cross section area of the bone bridge is smaller, and the displacement of the fusion cage is avoided.
Bone cement filling technology has emerged from the 30 s of the 19 th century and has been used in clinical surgery. The bone cement comprises two parts, wherein one part is PMMA particle powder; a part is a liquid of methacrylic acid monomer. Because the polymerization initiator is contained in the powder and the activator is contained in the monomer, heating and extra pressure are not needed in the polymerization and fixation processes of the bone cement, and the bone cement is self-curing or cold curing. At present, the bone cement spinal column operation is more applied to vertebroplasty and PVP and PKP, and is a technology for strengthening water body by injecting bone cement into a pathological vertebral body. Wherein, the PKP technology is firstly expanded by a balloon and then injected with bone cement.
Biomedical degradable high molecular materials are one field that has been widely mentioned in recent years. The degradable biological high molecular material is a material which is gradually degraded into low molecular weight compounds or monomers in a living body through hydrolysis, enzymolysis and other processes, degradation products can be discharged out of the body or can participate in normal metabolism in the body to disappear, and the degradable biological material has the following advantages: 1. better biocompatibility, the degradable biological material can be generally subjected to material design and surface interface modification according to the environmental characteristics of a human body, so that the compatibility between an implant material and tissues can be effectively improved, and the due physical and mechanical properties of the material can be ensured. 2. The implanted material has more stable and reliable physical and mechanical properties, is easy to process and form, is convenient for disinfection and sterilization, has no toxicity or heat source, and does not cause cancers and deformities. 3. The material for temporary implantation in the body has a controlled degradation cycle and the degradation products are non-toxic monomers that can be absorbed or metabolized.
Disclosure of Invention
Aiming at the problems, the invention provides a fence type endoscope fusion device adopting an absorbable material and a fusion method thereof, which mainly solve the problems in the background art.
The invention provides a fence type endoscope fusion device adopting an absorbable material, which comprises an endoscope and a fusion assembly, wherein the fusion assembly comprises a balloon assembly, a bone cement input device and a bone grafting assembly, the balloon assembly comprises a balloon embedding assembly, an absorbable outer balloon and an inner balloon, the bone grafting assembly comprises a pressurized bone grafting funnel and a pressurized bone grafting rod, the balloon assembly is used for opening an intervertebral space and constructing a fence type absorbable cement structure, the bone cement input device is used for injecting the absorbable bone cement, and the bone grafting assembly is used for pressurized bone grafting.
The improved structure is characterized in that the absorbable outer balloon is a hollow balloon body with a U-shaped cross section, the inner balloon is embedded inside the absorbable outer balloon, one end of the inner balloon is provided with an air inlet hole, the absorbable outer balloon corresponds to the air inlet hole, a center hole is formed in the position of the air inlet hole, a first balloon extension channel and a second balloon extension channel are respectively arranged at the upper end and the lower end of the center hole, and the tail end of the first balloon extension channel is of a closed structure.
The improved structure is characterized in that a bone cement output tube, a bone cement input tube and an air inlet and outlet tube are arranged on the top end of the balloon imbedding component, a gas port, a bone cement input port and an observation port are arranged at the bottom end of the balloon imbedding component, the gas port is communicated with the air inlet and outlet tube, the bone cement input port is communicated with the bone cement input tube, the observation port can observe the condition of the bone cement output tube, a first balloon extension channel extends into the bone cement output tube, a second balloon extension channel extends into the bone cement input tube, and the air inlet and outlet tube extends into the center hole.
The balloon implantation assembly is further improved in that an outer sheath kit is further sleeved on the balloon implantation assembly, a torsion bar is arranged at the bottom end of the outer sheath kit, a balloon outer sheath bayonet is arranged at the top end of the outer sheath kit and used for fixing the absorbable outer balloon, and the torsion bar is used for twisting to release the fixation of the absorbable outer balloon when the balloon implantation assembly is separated.
The further improvement lies in that the top end of the balloon implantation assembly is connected with the endoscope, and the bone cement input port of the balloon implantation assembly is connected with the bone cement input device.
The further improvement is that the endoscope is detachably connected with the balloon implanting component, the pressurizing bone grafting funnel and the pressurizing bone grafting rod respectively.
The further improvement is that the absorbable outer balloon is made of absorbable polymer materials, and the bone cement input by the bone cement input device is made of polymethyl methacrylate, ceramic calcium phosphate artificial bones or absorbable organic polymer materials.
The invention provides a fence type endoscope fusion method adopting an absorbable material in a second aspect, which comprises the following steps:
s1, establishing a clear endoscope channel by using an endoscope, and preprocessing an implantation space;
s2, embedding the inner balloon into the absorbable outer balloon, fixing the absorbable outer balloon and the inner balloon at the top end of a balloon implantation assembly by means of a balloon outer sheath bayonet, fixing the balloon implantation assembly on the endoscope, and implanting the balloon implantation assembly into an implantation space through an endoscope working channel;
s3, pressurizing and unfolding the inner saccule by an air pump through an air inlet and outlet pipe, adjusting the position of the saccule and the height of the intervertebral space, and pressurizing and unfolding the absorbable outer saccule by the air pump through the air inlet and outlet pipe;
s4, connecting the bone cement input device with the bone cement input port of the balloon embedding assembly, implanting bone cement until the observation port can observe that the first balloon extension channel is expanded and deformed, stopping implanting the bone cement, and curing the bone cement to form a bone cement fence;
s5, releasing and removing the inner balloon, cleaning the inner wall of the absorbable outer balloon through the endoscope working channel, and performing pressurized bone grafting on the implantation space by using a pressurized bone grafting funnel and a pressurized bone grafting rod respectively;
and S6, observing the bone grafting condition through an endoscope, and sealing the bone cement injection channel capable of absorbing the outer balloon by using bone cement after the bone grafting requirement is met to complete bone grafting.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the double-balloon folding technology, the balloon is small in size, the intervertebral space height is expanded by pressurizing the balloon, the bone grafting amount can be adjusted according to clinical requirements, the condition that the nail rod reduction operation is not uniform at the present stage is changed, and the operation safety and efficiency are improved;
2. the outer balloon is made of absorbable polymer material, so that the bone bridge fusion can be promoted, the postoperative rehabilitation time is shortened, and the recurrence probability is reduced;
3. the absorbable bone cement (such as polymethyl methacrylate (PMMA), ceramic calcium phosphate artificial bone, absorbable organic polymer material and the like) is adopted, so that the different elastic modulus and hardness can be adjusted according to different patient groups and vertebral body states, the similarity of bone structures is ensured, the original bone structure is protected to the maximum extent, the bone cement absorption time is prolonged, and the condition of postoperative collapse is reduced.
4. The absorbable outer balloon can be manufactured according to the specificity of a patient, and a completely fit balloon can be printed by adopting a 3D printing technology;
5. the size of the saccule can be adjusted according to the osteoporosis degree of a patient, so that the bone grafting amount is adjusted, the bone grafting space ensures the fusion effect of the bone bridge and the upper and lower vertebral bodies, and the operation quality is ensured;
6. the wound is small, and the cost is low;
7. the operation difficulty is low, and the maximum effect is matched with the structure of the human body;
8. the inflammatory reaction after operation is reduced, and the original structure of the human body is protected to the maximum extent;
9. pressure bone grafting is allowed, and the bone grafting effect is ensured to be sufficient;
10. the upper and lower vertebral bodies are perfectly reset without any bone structure loss.
Drawings
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating steps of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a portion of a structure according to an embodiment of the present invention;
wherein: 1. an absorbable outer balloon; 11. a first balloon extension channel; 12. a second balloon extension channel; 13. a central bore; 2. an inner balloon; 21. an air inlet; 3. a balloon insertion assembly; 31. a bone cement delivery pipe; 32. a bone cement input tube; 33. air inlet and outlet pipes; 34. a balloon sheath bayonet; 35. a gas port; 36. a bone cement input port; 37. an observation port; 38. an outer sheath assembly; 4. an endoscope; 5. a bone cement input device; 6. pressurizing the bone grafting funnel; 7. and (5) pressurizing the bone grafting rod.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The invention discloses an enclosure type endoscopic fusion technology adopting an absorbable material, which is characterized in that an enclosure is formed by double balloons made of the absorbable material, and the invention provides an intervertebral fusion technology operation method of an innovative spine minimally invasive operation. The bone grafting device has the advantages that a fence type bone cement structure capable of being absorbed is adopted, a large-area bone grafting space is formed, sufficient bone grafting is guaranteed, and the effect of replacing a common fusion cage is achieved.
Referring to fig. 1, fig. 2 and fig. 3, an adopt absorbable material rail formula scope to fuse device, including endoscope 4 and fusion subassembly, fusion subassembly includes sacculus subassembly, bone cement input device 5 and the bone grafting subassembly, the sacculus subassembly includes that the sacculus is put into subassembly 3, can absorb outer sacculus 1 and interior sacculus 2, the bone grafting subassembly includes that pressurization is planted bone funnel 6 and pressurization and is planted bone stick 7, the sacculus subassembly is used for strutting the intervertebral space and builds the absorbable cement structure of rail formula, bone cement input device 5 is used for pouring into and can absorb bone cement, the bone grafting subassembly is used for the pressurization to plant the bone.
As a preferred embodiment of the present invention, the absorbable outer balloon 1 is a hollow balloon body with a U-shaped cross section, the inner balloon 2 is embedded inside the absorbable outer balloon 1, an air inlet 21 is formed at one end of the inner balloon 2, a central hole 13 is formed at a position of the absorbable outer balloon 1 corresponding to the air inlet 21, a first balloon extension channel and a second balloon extension channel are respectively formed at the upper end and the lower end of the central hole 13, and the tail end of the first balloon extension channel is a closed structure.
Specifically, the U-shaped design of the absorbable outer balloon 1 and the inner balloon 2 is beneficial to the whole stress during inflation, and can be used for furthest strutting and propping up the intervertebral space in the bone cement implantation process to achieve the optimal implantation state, which is the optimal shape design obtained by the inventor after continuous experiments.
As a preferred embodiment of the present invention, a bone cement outlet tube 31, a bone cement inlet tube 32 and an air inlet and outlet tube 33 are disposed at the top end of the balloon insertion assembly 3, an air port 35, a bone cement inlet port 36 and an observation port 37 are disposed at the bottom end of the balloon insertion assembly 3, the air port 35 is communicated with the air inlet and outlet tube 33, the bone cement inlet port 36 is communicated with the bone cement inlet tube 32, the observation port 37 can observe the condition of the bone cement outlet tube 31, the first balloon extension channel extends into the bone cement outlet tube 31, the second balloon extension channel extends into the bone cement inlet tube 32, and the air inlet and outlet tube 33 extends into the central hole 13.
In a preferred embodiment of the present invention, the balloon insertion assembly 3 is further sleeved with an outer sheath assembly 38, a torsion bar is disposed at a bottom end of the outer sheath assembly 38, a balloon sheath bayonet 34 is disposed at a top end of the outer sheath assembly 38, the balloon sheath bayonet 34 is used for fixing the absorbable outer balloon 1, and the torsion bar is used for releasing the fixation of the absorbable outer balloon 1 by twisting when the balloon insertion assembly 3 is detached.
In a preferred embodiment of the present invention, the tip of the balloon insertion assembly 3 is connected to the endoscope 4, and the bone cement input port 36 of the balloon insertion assembly 3 is connected to the bone cement input device 5.
In a preferred embodiment of the present invention, the endoscope 4 is detachably connected to the balloon insertion assembly 3, the pressurized bone grafting funnel 6, and the pressurized bone grafting rod 7, respectively.
In a preferred embodiment of the present invention, the absorbable outer balloon 1 is made of absorbable polymer material, and the bone cement input by the bone cement input device 5 is made of polymethyl methacrylate, ceramic calcium phosphate artificial bone or absorbable organic polymer material.
Referring to fig. 2, a fence-type endoscopic fusion method using absorbable materials includes the following steps:
s1, establishing a clear endoscope channel by using the endoscope 4, and preprocessing an implantation space;
s2, embedding the inner balloon 2 into the absorbable outer balloon 1, fixing the absorbable outer balloon 1 and the inner balloon 2 at the top end of a balloon implantation component 3 by means of a balloon outer sheath bayonet 34, fixing the balloon implantation component 3 on the endoscope, and implanting the absorbable outer balloon 1 and the inner balloon 2 into an implantation space through a working channel of the endoscope 4;
s3, pressurizing and unfolding the inner balloon 2 through the air inlet and outlet pipe by an air pump, adjusting the position of the balloon and the height of the intervertebral space, and pressurizing and unfolding the absorbable outer balloon 1 through the air inlet and outlet pipe 33 by the air pump;
s4, connecting the bone cement input device 5 with the bone cement input port 36 of the balloon insertion assembly 3, implanting bone cement until the observation port 37 observes that the first balloon extension channel is expanded and deformed, stopping implanting the bone cement, and forming a bone cement fence after the bone cement is solidified;
s5, releasing and removing the inner balloon 2, cleaning the inner wall of the absorbable outer balloon 1 through a working channel of the endoscope 4, and performing pressurized bone grafting on the implantation space by using the pressurized bone grafting funnel 6 and the pressurized bone grafting rod 7 respectively;
s6, observing the bone grafting condition through the endoscope 4, and sealing the bone cement injection channel capable of absorbing the outer balloon 1 by using bone cement after meeting the bone grafting requirement to complete the bone grafting.
In particular, the invention mainly aims to provide an absorbable material fence type endoscopic fusion technology. Adopts double-balloon folding technology, and completes the pressurized bone grafting by the balloon pressurization and distraction of the intervertebral space height and related surgical tools. The size of the balloon can be adjusted according to the requirement so as to facilitate pressurization bone grafting and reduce postoperative collapse. Reduces the operation difficulty, and is safer and more effective.
The surgical system solves the technical scheme that: an absorbable outer balloon 1, an inner balloon 2, a balloon implantation component 3, an endoscope 4, a bone cement input device 5, a pressurized bone grafting funnel 6 and a pressurized bone grafting rod 7. The main working flow is as follows: establishing an endoscope channel; making a cut on the fiber ring under an endoscope;
processing nucleus pulposus in the disc under an endoscope, preprocessing an implantation space, and processing an upper end plate and a lower end plate; combining an absorbable outer balloon 1 and an inner balloon 2; the balloon embedding component 3 is used for embedding through an endoscope working channel, the inner balloon 2 is pressurized and expanded by an air pump, and the height condition of the intervertebral space is observed under an X-ray perspective ring mirror; adjusting the position of the inner balloon and the distraction height of the intervertebral space according to the operation requirement; the air pump pressurizes and opens the absorbable outer saccule 1; fully implanting bone cement into the outer balloon by using the bone cement input device 5, and forming a bone cement fence after the bone cement is solidified; the inner balloon 2 is released and the inner balloon 2 is taken out. The inner wall of the outer balloon is cleaned through the endoscope 4, the inner wall of the outer balloon can be ablated through the electrode, and exposed bone cement is used for observing the effect of the outer balloon bone cement fence; creating the bone grafting fusion environment. The pressurized bone grafting funnel 6 and the pressurized bone grafting rod 7 are used for performing pressurized bone grafting on the bone grafting space under the endoscope. The bone grafting condition is observed under an endoscope, and after the bone grafting requirement is met, a channel on the outer balloon bone cement wall is sealed by using bone cement. The operation is ended.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the double-balloon folding technology, the balloon is small in size, the intervertebral space height is expanded by pressurizing the balloon, the bone grafting amount can be adjusted according to clinical requirements, the condition that the nail rod reduction operation is not uniform at the present stage is changed, and the operation safety and efficiency are improved;
2. the outer balloon is made of absorbable polymer material, so that the bone bridge fusion can be promoted, the postoperative rehabilitation time is shortened, and the recurrence probability is reduced;
3. the absorbable bone cement (such as polymethyl methacrylate (PMMA), ceramic calcium phosphate artificial bone, absorbable organic polymer material and the like) is adopted, so that the different elastic modulus and hardness can be adjusted according to different patient groups and vertebral body states, the similarity of bone structures is ensured, the original bone structure is protected to the maximum extent, the bone cement absorption time is prolonged, and the condition of postoperative collapse is reduced.
4. The absorbable outer balloon can be manufactured according to the specificity of a patient, and a completely fit balloon can be printed by adopting a 3D printing technology;
5. the size of the saccule can be adjusted according to the osteoporosis degree of a patient, so that the bone grafting amount is adjusted, the bone grafting space ensures the fusion effect of the bone bridge and the upper and lower vertebral bodies, and the operation quality is ensured;
6. the wound is small, and the cost is low;
7. the operation difficulty is low, and the maximum effect is matched with the structure of the human body;
8. the inflammatory reaction after operation is reduced, and the original structure of the human body is protected to the maximum extent;
9. pressure bone grafting is allowed, and the bone grafting effect is ensured to be sufficient;
10. the upper and lower vertebral bodies are perfectly reset without any bone structure loss.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides an adopt absorbable material rail formula scope to fuse device, its characterized in that, includes endoscope (4) and fuses the subassembly, fuse the subassembly and include sacculus subassembly, bone cement input device (5) and bone grafting subassembly, the sacculus subassembly includes that the sacculus is put into subassembly (3), can absorb outer sacculus (1) and interior sacculus (2), interior sacculus (2) are inlayed and are established can absorb outside sacculus (1) inside to fix can absorb outer sacculus (1) and interior sacculus (2) at the top of sacculus is put into subassembly (3) with the help of sacculus sheath bayonet socket (34), the top that the subassembly (3) was put into to the sacculus with endoscope (4) are connected, the bone cement input port (36) that the subassembly (3) was put into to the sacculus with bone cement input device (5) are connected, bone grafting subassembly includes pressurization bone grafting funnel (6) and pressurization bone grafting stick (7), the endoscope (4) still respectively with subassembly (3), pressurization bone grafting funnel (6), the connection can be dismantled in the pressurization bone rod (7) of planting of sacculus income, the sacculus subassembly is used for strutting the intervertebral space and builds the absorbable cement structure of rail formula, bone cement input device (5) are used for pouring into absorbable bone cement into, the bone grafting subassembly is used for the pressurization bone grafting.
2. The fence type endoscopic fusion device with absorbable materials according to claim 1, wherein the absorbable outer balloon (1) is a hollow balloon with a U-shaped cross section, one end of the inner balloon (2) is provided with an air inlet hole (21), a central hole (13) is arranged at a position of the absorbable outer balloon (1) corresponding to the air inlet hole (21), the upper end and the lower end of the central hole (13) are respectively provided with a first balloon extension channel and a second balloon extension channel, and the tail end of the first balloon extension channel is a closed structure.
3. The rail-type endoscopic fusion device with absorbable material of claim 2, it is characterized in that the top end of the balloon imbedding component (3) is provided with a bone cement output pipe (31), a bone cement input pipe (32) and an air inlet and outlet pipe (33), the bottom end of the balloon imbedding component (3) is provided with an air port (35), a bone cement input port (36) and an observation port (37), the air inlet (35) is communicated with the air inlet and outlet pipe (33), the bone cement input port (36) is communicated with the bone cement input pipe (32), the observation port (37) can observe the condition of the bone cement delivery tube (31), the first balloon extension channel extends into the bone cement output tube (31), the second balloon extension channel extends into the bone cement input tube (32), and the air inlet and outlet tube (33) extends into the central hole (13).
4. The rail-type endoscopic fusion device with absorbable materials as claimed in claim 3, wherein the balloon insertion assembly (3) is further sleeved with an outer sheath assembly (38), the bottom end of the outer sheath assembly (38) is provided with a torsion bar, the top end of the outer sheath assembly (38) is provided with a balloon outer sheath bayonet (34), the balloon outer sheath bayonet (34) is used for fixing the absorbable outer balloon (1), and the torsion bar is used for twisting to release the fixation of the absorbable outer balloon (1) when the balloon insertion assembly (3) is detached.
5. The fence-type endoscopic fusion device with absorbable materials according to claim 1, wherein the absorbable outer balloon (1) is made of absorbable polymer materials, and the bone cement input by the bone cement input device (5) is made of polymethyl methacrylate, ceramic calcium phosphate artificial bone or absorbable organic polymer materials.
6. A fence type endoscope fusion method adopting absorbable materials is characterized by comprising the following steps:
s1, establishing a clear endoscope channel by using the endoscope (4) to carry out pretreatment of an implantation space;
s2, embedding the inner balloon (2) into the absorbable outer balloon (1), fixing the absorbable outer balloon (1) and the inner balloon (2) at the top end of a balloon implantation assembly (3) by means of a balloon outer sheath bayonet (34), fixing the balloon implantation assembly (3) on the endoscope, and implanting the balloon implantation assembly into an implantation space through a working channel of the endoscope (4);
s3, pressurizing and expanding the inner balloon (2) through the air inlet and outlet pipe by an air pump, adjusting the position of the balloon and the height of the intervertebral space, and pressurizing and expanding the absorbable outer balloon (1) through the air inlet and outlet pipe (33) by the air pump;
s4, connecting the bone cement input device (5) with a bone cement input port (36) of the balloon embedding assembly (3), implanting bone cement until the observation port (37) observes that the first balloon extension channel is expanded and deformed, stopping implanting the bone cement, and forming a bone cement fence after the bone cement is solidified;
s5, releasing and removing the inner balloon (2), cleaning the inner wall of the absorbable outer balloon (1) through a working channel of an endoscope (4), and performing pressurized bone grafting on the implantation space by using a pressurized bone grafting funnel (6) and a pressurized bone grafting rod (7) respectively;
s6, observing the bone grafting condition through the endoscope (4), and sealing the bone cement injection channel of the absorbable outer balloon (1) by using bone cement after the bone grafting requirement is met to complete bone grafting.
Priority Applications (1)
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