CN114145791B - Distracting system for an intraspinal bone scaffolding assembly - Google Patents
Distracting system for an intraspinal bone scaffolding assembly Download PDFInfo
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- CN114145791B CN114145791B CN202111456818.0A CN202111456818A CN114145791B CN 114145791 B CN114145791 B CN 114145791B CN 202111456818 A CN202111456818 A CN 202111456818A CN 114145791 B CN114145791 B CN 114145791B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B17/68—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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Abstract
The present utility model provides a distraction system for an intraspinal bone scaffolding assembly, comprising: a holding handle; the holding handle is provided with a threaded hole in the handle body and a bearing through hole; the knob piece comprises a knob handle and a knob mounting head, wherein the knob mounting head is provided with a mounting external thread part which is connected with a threaded hole in the handle body; the knob mounting head is provided with a knob through hole; the front end of the connecting pipe is provided with a notch groove, and the connecting pipe comprises a pipe fitting body and two arm parts; each arm part is provided with an arm body groove; the pipe fitting body is connected with the holding handle; the inner pipe sequentially penetrates the pipe fitting body, the bearing through hole and the knob through hole; the outer side surface of the inner tube is provided with two protruding parts; the rear ends of the two protruding pieces are abutted against the notch groove; each projection is located between two arms; the driving rod comprises a rod body and a driving block, and the rod body sequentially penetrates through the inner pipe and the connecting pipe. The expanding system has the advantages of simple structure, convenient operation and convenient disassembly with the internal bone bracket component of the vertebral body.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a distraction system for an intraspinal bone bracket assembly.
Background
In performing vertebroplasty procedures, it is necessary to implant an intra-vertebral bone scaffolding assembly into the spine, then distract the intra-vertebral bone scaffolding assembly in the spine and inject bone cement. Chinese patent application, intraspinal bone scaffolding assembly, grant bulletin number: CN209422168U, the intraspinal bone scaffolding assembly comprising scaffolding bodies and struts; the front end of the bracket main body in the length direction is provided with an installation part, and the rear end of the bracket main body in the length direction is provided with a driving part; the bracket main body is provided with a through hole; the support rod sequentially passes through the mounting part, the support main body and the driving part, the support rod is in clearance fit with the through hole, and the support rod is fixedly connected with the mounting part; the support rod is provided with a hollow channel; the front end of the hollow channel of the support rod is provided with a rod piece internal thread part. After the intraspinal bone stent assembly is delivered to the site of the compressed fracture in the vertebral body, the stent body moves relative to the support rod and the stent body may be expanded into a hexagonal configuration. The spreader can spread the main body of the bracket to an extending state, but the existing spreader parts are too complex, so that the operation of doctors is inconvenient, and after bone cement is injected, the internal bone bracket component of the vertebral body and the spreader are difficult to detach. How to design a simple structure, simple operation, be convenient for dismantle with the internal bone support subassembly of centrum, and can not cause the problem that solves to the backbone, the person skilled in the art need not be solved.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model solves the technical problem of providing a distraction system for an intraspinal bone support assembly that has a simple structure, is convenient to operate, is easy to disassemble from the intraspinal bone support assembly, and does not damage the spinal column.
To achieve the above and other related objects, the present utility model provides a distraction system for an intra-vertebral bone scaffolding assembly, the intra-vertebral bone scaffolding assembly comprising a scaffolding body and a support rod; the front end of the bracket main body in the length direction is provided with an installation part, and the rear end of the bracket main body in the length direction is provided with a bracket rear part; the outer peripheral surface of the rear part of the bracket is provided with oppositely arranged convex parts, and the bracket main body is provided with a through hole; the support rod sequentially passes through the mounting part, the support main body and the rear part of the support, the support rod is in clearance fit with the through hole, and the support rod is fixedly connected with the mounting part; the support rod is provided with a hollow channel; the front end of the hollow channel of the support rod is provided with a rod piece internal thread part; the support body moves relative to the support rod, and the support body can be stretched to be of a hexagonal structure;
a distraction system comprising: the device comprises a holding handle, a knob piece, a connecting pipe, an inner pipe and a driving rod;
the rear end of the holding handle is provided with a handle internal threaded hole, the axial direction of the handle internal threaded hole is parallel to the front-rear direction of the holding handle, the front end of the holding handle is provided with a bearing through hole, the central axis of the bearing through hole is collinear with the central axis of the handle internal threaded hole, and the bearing through hole is communicated with the handle internal threaded hole;
the knob piece comprises a knob handle and a knob mounting head connected with the front end of the knob handle, wherein the outer peripheral surface of the knob mounting head is provided with a mounting external thread part, and the mounting external thread part is connected with a threaded hole in the handle body; the front end of the knob mounting head is provided with a knob through hole; the central axis of the knob through hole is in line with the central axis of the bearing through hole; the diameter of the knob through hole is equal to the diameter of the bearing through hole;
the front end of the connecting pipe is provided with a notch groove, and the notch groove is recessed backwards from the front end of the connecting pipe and penetrates through the connecting pipe in the radial direction; the connecting pipe comprises a pipe body and a connecting arm arranged at the front end of the pipe body, and the connecting arm comprises two oppositely arranged arm parts which are respectively positioned at two sides of the notch groove; an arm body groove for the protrusion part to be inserted is formed in the inner side surface of each arm part; the rear end of the pipe fitting body is connected with the front end of the holding handle, the central axis of the pipe fitting body is collinear with the central axis of the bearing through hole, and the pipe fitting body is communicated with the bearing through hole; the inner diameter of the pipe fitting body is equal to the diameter of the bearing through hole;
the inner tube sequentially penetrates the pipe fitting body, the bearing through hole and the knob through hole, the outer diameter of the inner tube is equal to the diameter of the bearing through hole, and the inner tube is in clearance fit with the bearing through hole; the outer side surface of the front end of the inner tube is provided with two protruding parts which are oppositely arranged; the rear ends of the two protruding pieces are abutted against the groove bottom surfaces of the notch grooves; each of the projections is located between two of the arm portions;
the driving rod comprises a rod body and a driving block connected with the rear end of the rod body, the front end of the rod body is provided with a rod body external thread part, and the front end of the rod body sequentially penetrates through the inner pipe and the connecting pipe; the rod body external thread part is used for connecting the rod piece internal thread part of the support rod, the size of the driving block is larger than that of the knob through hole, and the driving block is contacted with the rear end of the knob handle.
Preferably, the front end of the holding handle is provided with a concave groove, the rear end of the connecting pipe is provided with a positioning block, and the positioning block is fixedly arranged in the concave groove.
Preferably, the rear end of the knob handle is provided with a storage groove for the driving block to be inserted, and the front end of the driving block is contacted with the bottom surface of the storage groove.
Preferably, two of the protruding members are connected, and the two protruding members enclose an oval outline structure.
As described above, the distraction system for an intrabody bone scaffolding assembly of the present utility model has the following beneficial effects:
when the expanding system for the intraspinal bone bracket component is used, the expanding system is connected with the intraspinal bone bracket component, the front end of a driving rod is inserted into a hollow channel of a supporting rod, the external thread part of a rod body is connected with the internal thread part of the rod body of the supporting rod, two bulges at the rear part of the bracket are respectively inserted into arm body grooves of two arm parts, and the rear part of the bracket is in clamping connection with the two arm parts; then, the knob handle of the knob piece is rotated, the knob handle is propped against the driving block of the driving rod to move backwards, and the driving rod is connected with the supporting rod through threads, so that the bracket main body can be propped open in the backward movement process of the driving rod; after the bracket main body is completely unfolded, the driving rod is rotated, so that the driving rod is separated from the supporting rod, and the driving rod is pulled out; then the knob piece is screwed out from the threaded hole in the handle body of the holding handle, and bone cement is injected into the inner tube; after the bone cement is injected, the inner tube is rotated, so that the two protruding parts of the inner tube respectively prop open the two arm parts, and the detachment of the bone bracket component and the prop-open system in the vertebral body can be completed; the utility model is a distraction system which has simple structure, convenient operation, convenient disassembly with the internal bone bracket component of the vertebral body and no damage to the vertebral column.
Drawings
Fig. 1 is a schematic perspective view showing a distraction system for an intra-vertebral bone scaffold assembly according to the present embodiment, when the distraction system is coupled to the intra-vertebral bone scaffold assembly in a contracted state.
Fig. 2 is a schematic cross-sectional view showing the distracting system for an intrabody bone scaffolding assembly of the present embodiment.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4 is a schematic perspective view showing one side of the intrabody bone scaffolding assembly of the present embodiment in a contracted state.
Fig. 5 is a schematic perspective view showing the front portion of the intrabody bone scaffolding assembly of the present embodiment in a contracted state.
Fig. 6 is a schematic perspective view showing the structure of the support rod of the intraspinal bone supporting frame assembly according to the present embodiment.
Fig. 7 is a schematic perspective view showing a distraction system for an intraspinal bone scaffolding assembly in accordance with the present embodiment.
Fig. 8 is a schematic cross-sectional view of a distraction system for an intraspinal bone graft assembly according to the present embodiment.
Fig. 9 is an enlarged schematic view of the structure at B of fig. 8.
Fig. 10 is a schematic perspective view showing a handle of the distraction system for the intraspinal bone support assembly of the present embodiment.
Fig. 11 is a schematic cross-sectional view showing the structure of a grip handle of the distraction system for an intraspinal bone graft assembly according to the present embodiment.
Fig. 12 is a schematic perspective view showing a knob member of the distraction system for an intraspinal bone graft assembly according to the present embodiment.
Fig. 13 is a schematic cross-sectional view showing a knob member of the distraction system for an intraspinal bone graft assembly according to the present embodiment.
Fig. 14 is a schematic perspective view showing a connection tube of the distraction system for an intraspinal bone bracket assembly according to the present embodiment.
Fig. 15 is an enlarged schematic view of the structure at C of fig. 14.
Fig. 16 is a schematic perspective view showing an inner tube of the distraction system for an intrabody bone scaffolding assembly of the present embodiment.
Fig. 17 is an enlarged schematic view of the structure at D of fig. 16.
Fig. 18 is a schematic perspective view showing a driving rod of the distraction system for the intraspinal bone support assembly of the present embodiment.
Fig. 19 is a schematic perspective view showing a distracting system for an endosteal bone scaffolding assembly of the present embodiment in association with the endosteal bone scaffolding assembly in a distracted state.
Fig. 20 is a schematic cross-sectional view showing the distracting system for an endosteal bone scaffolding assembly of the present embodiment in connection with the endosteal bone scaffolding assembly in the distracted state.
Fig. 21 is a schematic perspective view showing the bone scaffold assembly in the distracted state in the present embodiment.
Description of the reference numerals
100. Bracket main body
110. Mounting part
120. The rear part of the bracket
121. Raised portion
130. Through hole
200. Support bar
210. Hollow channel
220. Rod piece internal thread part
300. Holding handle
310. Threaded hole in handle body
320. Bearing through hole
330. Concave groove
400. Knob piece
410. Knob handle
411. Storage groove
420. Knob mounting head
421. Mounting external screw thread portion
422. Knob through hole
500. Connecting pipe
510. Notch groove
520. Pipe fitting body
530. Arm portion
531. Arm body groove
540. Positioning block
600. Inner pipe
610. Protruding piece
700. Driving rod
710. Rod body
711. External thread part of rod body
720. Driving block
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
As shown in fig. 1 to 21, the distraction system for an intra-vertebral bone scaffold assembly of the present embodiment includes a scaffold main body 100 and a support rod 200; the front end of the bracket main body 100 in the length direction is provided with a mounting part 110, and the rear end of the bracket main body 100 in the length direction is provided with a bracket rear part 120; the outer peripheral surface of the bracket rear part 120 is provided with oppositely arranged convex parts 121, and the bracket main body 100 is provided with a through hole 130; the supporting rod 200 sequentially passes through the mounting part 110, the bracket main body 100 and the bracket rear part 120, the supporting rod 200 is in clearance fit with the through hole 130, and the supporting rod 200 is fixedly connected with the mounting part 110; the support bar 200 has a hollow passage 210; the front end of the hollow channel 210 of the support bar 200 is provided with a rod piece internal thread part 220; the stand body 100 moves relative to the support bar 200, and the stand body 100 may be extended to have a hexagonal structure;
a distraction system comprising: a grip handle 300, a knob member 400, a connection pipe 500, an inner pipe 600, and a driving lever 700;
the rear end of the holding handle 300 is provided with a handle internal threaded hole 310, the axial direction of the handle internal threaded hole 310 is parallel to the front-rear direction of the holding handle 300, the front end of the holding handle 300 is provided with a bearing through hole 320, the central axis of the bearing through hole 320 is in line with the central axis of the handle internal threaded hole 310, and the bearing through hole 320 is communicated with the handle internal threaded hole 310;
the knob member 400 includes a knob handle 410 and a knob mounting head 420 connected to the front end of the knob handle 410, the knob mounting head 420 having an outer circumferential surface provided with a mounting external screw portion 421, the mounting external screw portion 421 being connected to the threaded hole 310 in the handle body; the front end of the knob mounting head 420 is provided with a knob through hole 422; the central axis of the knob through hole 422 is collinear with the central axis of the receiving through hole 320; the diameter of the knob through hole 422 is equal to the diameter of the receiving through hole 320;
the front end of the connection pipe 500 is provided with a notch groove 510, and the notch groove 510 is recessed backward from the front end of the connection pipe 500 and penetrates the connection pipe 500 in the radial direction; the connection pipe 500 comprises a pipe body 520 and a connection arm arranged at the front end of the pipe body 520, wherein the connection arm comprises two oppositely arranged arm parts 530 which are respectively positioned at two sides of the notch groove 510; an arm body groove 531 into which the boss 121 is inserted is provided on the inner side surface of each arm 530; the rear end of the pipe body 520 is connected with the front end of the holding handle 300, the central axis of the pipe body 520 is collinear with the central axis of the receiving through hole 320, and the pipe body 520 is communicated with the receiving through hole 320; the inner diameter of the tube body 520 is equal to the diameter of the receiving through hole 320;
the inner tube 600 sequentially penetrates the tube body 520, the receiving through hole 320 and the knob through hole 422, the outer diameter of the inner tube 600 is equal to the diameter of the receiving through hole 320, and the inner tube 600 is in clearance fit with the receiving through hole 320; the outer side of the front end of the inner tube 600 has two oppositely disposed protrusions 610; the rear ends of the two protruding pieces 610 are abutted against the groove bottom surface of the notch groove 510; each projection 610 is located between two arms 530;
the driving rod 700 includes a rod body 710 and a driving block 720 connected to the rear end of the rod body 710, the front end of the rod body 710 is provided with a rod body external screw part 711, and the front end of the rod body 710 sequentially passes through the inner pipe 600 and the connection pipe 500; the rod body external screw part 711 is used to connect the rod body internal screw part 220 of the support rod 200, the size of the driving block 720 is larger than that of the knob through hole 422, and the driving block 720 is in contact with the rear end of the knob handle 410.
When the expanding system for the intraspinal bone bracket assembly is used, the expanding system is connected with the intraspinal bone bracket assembly, the front end of the driving rod 700 is inserted into the hollow channel 210 of the supporting rod 200, the rod body external thread part 711 of the rod body 710 is connected with the rod body internal thread part 220 of the supporting rod 200, the two protruding parts 121 of the bracket rear part 120 are respectively inserted into the arm body grooves 531 of the two arm parts 530, and the bracket rear part 120 and the two arm parts 530 form clamping connection; then, when the knob handle 410 of the knob member 400 is rotated counterclockwise, the knob handle 410 moves backward, and the knob handle 410 abuts against the driving block 720 of the driving rod 700, the driving rod 700 moves backward along with the knob handle 410, and the driving rod 700 is screwed with the supporting rod 200, so that the bracket main body 100 is spread in the backward movement of the driving rod 700; after the bracket main body 100 is completely unfolded, the driving rod 700 is rotated, so that the driving rod 700 is separated from the supporting rod 200, and the driving rod 700 is pulled out; then the knob 400 is screwed out from the threaded hole 310 in the handle body of the holding handle 300, and bone cement is injected into the inner tube 600; after the bone cement is injected, the inner tube 600 is rotated, so that the two protruding parts 610 of the inner tube 600 respectively prop open the two arm parts 530, and the detachment of the bone scaffold assembly and the prop-open system in the vertebral body can be completed; the utility model is a distraction system which has simple structure, convenient operation, convenient disassembly with the internal bone bracket component of the vertebral body and no damage to the vertebral column.
According to the expanding system for the intraspinal bone bracket assembly, two protruding parts 121 of the rear bracket part 120 are respectively inserted into arm body grooves 531 of two arm parts 530, and the rear bracket part 120 and the two arm parts 530 form clamping connection; the inner tube 600 is rotated such that the two protruding members 610 of the inner tube 600 respectively prop apart the two arm portions 530, the bracket rear portion 120 is inserted between the two arm portions 530, and after the two protruding portions 121 are respectively opposite to the arm body grooves 531 of the two arm portions 530, the inner tube 600 is rotated again, the two protruding members 610 of the inner tube 600 no longer prop apart the two arm portions 530, such that the two protruding portions 121 are respectively inserted into the arm body grooves 531 of the two arm portions 530; when it is desired to disassemble the intraspinal bone graft assembly from the distractor system, the inner tube 600 is rotated such that the two projections 610 of the inner tube 600 distract the two arms 530, respectively, and the projections 610 can be removed from the arm recesses 531. The snap-fit connection of the bracket rear 120 and the two arms 530 secures and facilitates release of the intraspinal bone bracket assembly from the distraction system. The driving rod 700 is pulled out, the knob 400 is rotated out, and then bone cement is injected into the inner tube 600, thereby facilitating the operation.
The front end of the holding handle 300 is provided with a concave groove 330, the rear end of the connecting pipe 500 is provided with a positioning block 540, the positioning block 540 is fixedly arranged in the concave groove 330, and the positioning block 540 is provided with a block through hole. This structure allows the grip handle 300 to be stably coupled with the connection pipe 500.
The rear end of knob handle 410 is provided with a receiving slot 411, receiving slot 411 is inserted by driving block 720, and the front end of driving block 720 is contacted with the bottom surface of receiving slot 411. This structure enables the driving lever 700 to stably move backward with the knob handle 410.
The two protruding members 610 are connected, and the two protruding members 610 enclose an oval outline structure, which facilitates the rotation operation of the inner tube 600, i.e. the two arm portions 530 can be spread apart.
The protruding portion 121 is an arc protruding member, and the arm body groove 531 is an arc groove. The structure enables the arc-shaped protruding piece to be stably inserted into the arc-shaped groove to form a stable clamping connection structure.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (4)
1. A distraction system for an intraspinal bone scaffolding assembly, characterized in that the intraspinal bone scaffolding assembly comprises a scaffolding body (100) and a support rod (200); the front end of the bracket main body (100) in the length direction is provided with an installation part (110), and the rear end of the bracket main body (100) in the length direction is provided with a bracket rear part (120); the outer peripheral surface of the bracket rear part (120) is provided with oppositely arranged convex parts (121), and the bracket main body (100) is provided with a through hole (130); the support rod (200) sequentially penetrates through the mounting part (110), the support main body (100) and the support rear part (120), the support rod (200) and the through hole (130) are in clearance fit, and the support rod (200) is fixedly connected with the mounting part (110); the support rod (200) has a hollow channel (210); the front end of the hollow channel (210) of the supporting rod (200) is provided with a rod piece internal thread part (220); the bracket main body (100) moves relative to the support rod (200), and the bracket main body (100) can be stretched into a hexagonal structure;
a distraction system comprising: a grip handle (300), a knob member (400), a connection pipe (500), an inner pipe (600), and a driving rod (700);
the rear end of the holding handle (300) is provided with a handle internal threaded hole (310), the axial direction of the handle internal threaded hole (310) is parallel to the front-rear direction of the holding handle (300), the front end of the holding handle (300) is provided with a bearing through hole (320), the central axis of the bearing through hole (320) is collinear with the central axis of the handle internal threaded hole (310), and the bearing through hole (320) is communicated with the handle internal threaded hole (310);
the knob piece (400) comprises a knob handle (410) and a knob mounting head (420) connected with the front end of the knob handle (410), wherein an outer peripheral surface of the knob mounting head (420) is provided with a mounting external thread part (421), and the mounting external thread part (421) is connected with the threaded hole (310) in the handle body; the front end of the knob mounting head (420) is provided with a knob through hole (422); the central axis of the knob through hole (422) is collinear with the central axis of the bearing through hole (320); the diameter of the knob through hole (422) is equal to the diameter of the receiving through hole (320);
the front end of the connecting pipe (500) is provided with a notch groove (510), and the notch groove (510) is recessed backwards from the front end of the connecting pipe (500) and penetrates through the connecting pipe (500) in the radial direction; the connecting pipe (500) comprises a pipe body (520) and connecting arms arranged at the front end of the pipe body (520), wherein the connecting arms comprise two oppositely arranged arm parts (530) which are respectively positioned at two sides of the notch groove (510); an arm body groove (531) into which the convex part (121) is inserted is formed in the inner side surface of each arm part (530); the rear end of the pipe fitting body (520) is connected with the front end of the holding handle (300), the central axis of the pipe fitting body (520) is collinear with the central axis of the bearing through hole (320), and the pipe fitting body (520) is communicated with the bearing through hole (320); the inner diameter of the pipe fitting body (520) is equal to the diameter of the receiving through hole (320);
the inner tube (600) sequentially penetrates the pipe fitting body (520), the receiving through hole (320) and the knob through hole (422), the outer diameter of the inner tube (600) is equal to the diameter of the receiving through hole (320), and the inner tube (600) is in clearance fit with the receiving through hole (320); the outer side surface of the front end of the inner tube (600) is provided with two oppositely arranged protruding pieces (610); the rear ends of the two protruding pieces (610) are abutted against the groove bottom surface of the notch groove (510);
each of the projections (610) is located between two of the arm portions (530);
the driving rod (700) comprises a rod body (710) and a driving block (720) connected with the rear end of the rod body (710), wherein the front end of the rod body (710) is provided with a rod external thread part (711), and the front end of the rod body (710) sequentially passes through the inner pipe (600) and the connecting pipe (500); the rod body external thread part (711) is used for connecting the rod piece internal thread part (220) of the supporting rod, the size of the driving block (720) is larger than that of the knob through hole (422), and the driving block (720) is contacted with the rear end of the knob handle (410).
2. A distraction system for an intrabody bone scaffolding assembly according to claim 1 wherein: the front end of the holding handle (300) is provided with a concave groove (330), the rear end of the connecting pipe (500) is provided with a positioning block (540), and the positioning block (540) is fixedly arranged in the concave groove (330).
3. A distraction system for an intrabody bone scaffolding assembly according to claim 1 wherein: the rear end of the knob handle (410) is provided with a containing groove (411), the containing groove (411) is used for the driving block (720) to be inserted, and the front end of the driving block (720) is contacted with the bottom surface of the containing groove (411).
4. A distraction system for an intrabody bone scaffolding assembly according to claim 1 wherein: the two protruding parts (610) are connected, and the two protruding parts (610) are enclosed into an oval outline structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456818.0A CN114145791B (en) | 2021-12-01 | 2021-12-01 | Distracting system for an intraspinal bone scaffolding assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456818.0A CN114145791B (en) | 2021-12-01 | 2021-12-01 | Distracting system for an intraspinal bone scaffolding assembly |
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| CN114145791A CN114145791A (en) | 2022-03-08 |
| CN114145791B true CN114145791B (en) | 2023-07-07 |
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| CN106963522A (en) * | 2017-04-21 | 2017-07-21 | 中国人民解放军第二军医大学第二附属医院 | A kind of micro-wound pressure-reduced emerging system of posterolateral lumbar spinal |
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| US8080061B2 (en) * | 2005-06-20 | 2011-12-20 | Synthes Usa, Llc | Apparatus and methods for treating bone |
| CN100340215C (en) * | 2005-09-19 | 2007-10-03 | 吴乃庆 | Bone dilator |
| US20080009868A1 (en) * | 2006-07-07 | 2008-01-10 | Bruce Gotfried | Device and method for treating compression fractures |
| TWI601512B (en) * | 2016-11-09 | 2017-10-11 | 劉欣懿 | Apparatus for bone treatment of the spine and tool for operating the apparatus |
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| DE102012003247A1 (en) * | 2012-02-20 | 2013-08-22 | Bentley Surgical Gmbh | Vertebral stent for implantation into vertebral body, is transported in elongated mold in application pipe and fulfills supporting function in vertebral body in elongated mold, where vertebral stent is made of mold memory alloy |
| CN205597999U (en) * | 2016-03-31 | 2016-09-28 | 遵义医学院附属医院 | Treatment centrum compression fracture's distraction device |
| CN106308984A (en) * | 2016-08-31 | 2017-01-11 | 广州爱锘德医疗器械有限公司 | Bidirectional lifting fusion cage and rotating mechanism used for driving bidirectional lifting fusion cage |
| CN106963522A (en) * | 2017-04-21 | 2017-07-21 | 中国人民解放军第二军医大学第二附属医院 | A kind of micro-wound pressure-reduced emerging system of posterolateral lumbar spinal |
| CN111096825A (en) * | 2018-10-26 | 2020-05-05 | 殷国勇 | Centrum bone support assembly |
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| CN114145791A (en) | 2022-03-08 |
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