CN109350210A - A unilateral vertebroplasty system tool - Google Patents
A unilateral vertebroplasty system tool Download PDFInfo
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- CN109350210A CN109350210A CN201811460212.2A CN201811460212A CN109350210A CN 109350210 A CN109350210 A CN 109350210A CN 201811460212 A CN201811460212 A CN 201811460212A CN 109350210 A CN109350210 A CN 109350210A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. 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
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention discloses a kind of pleurocentrum formation system tools, comprising: controlled deflection device and vertebral body expanding balloon device；Wherein, controlled deflection device includes: the first outer tube, and distal end is connected with fixing head；First inner tube is set in the first outer tube, is provided with notch on the tube wall of distal end；First operating mechanism can drive the first inner tube axial feed；Vertebral body expanding balloon device includes: the second outer tube and the second inner tube being disposed therein, and has gap therebetween；It is bent sacculus, is set in the distal end of the second inner tube, and the gap between the second inner and outer pipes is connected to, in pre-bending shape when being not affected by external force；Wire is inserted in the second inner tube, is distally in pre-bending shape when being not affected by external force.Pleurocentrum formation system tool of the invention can puncture the effect for realizing that bilateral punctures by unilateral, in use, operating time is short, have an X-rayed less, doctor and patient eat up few, good operation effect, safety, validity are high, at low cost.
Description
Technical field
The present invention relates to vertebroplasty procedure equipment, espespecially a kind of pleurocentrum formation system tool.
Background technique
Osteoporotic vertebral fracture (" OVCF ") is a kind of common spinal injury and will lead to long term disability,
In general, OVCF is related in backbone collapsing for one or more centrums.OVCF usually occurs in the lower part centrum of thoracic vertebrae or waist
The top centrum of vertebra.OVCF generally involves the fracture that the front part of impacted centrum generates.OVCF can lead to backbone by
The normal sequence and curvature of centrum in influence area, such as lordosis, are deformed.OVCF and/or related deformity of spine
To it is caused by the metastatic disease of backbone, wound etc. or related with osteoporosis.Until currently, which kind of mode doctor is taking
It is still subject to many limitations in terms for the treatment of OVCF and related deformities.
Compression fracture of vertabral body is treated, vertebroplasty (PVP) or balloon kyphoplasty (PKP) are generally used.Facing
Bed application is upper, and two kinds of modus operandis may be selected according to the experience of oneself in doctor: unilateral side punctures or bilateral punctures.Unilateral side punctures excellent
Point is that operating time is short, has an X-rayed less, doctor and patient eat up less.However, traditional unilateral puncture most probably leads to bone cement
It is unevenly distributed in centrum, unilateral bone cement leakage, so that the probability for making adjacent vertebral fracture increases.On the contrary, bilateral is worn
Thorn can make bone cement be evenly distributed in centrum, reduce stress and concentrate, enhance the intensity of centrum two sides.The shortcomings that bilateral punctures exists
In extending operating time, increase tissue trauma and medical expense.
To solve the above problems, the application is dedicated to providing a kind of pleurocentrum formation system tool.
Summary of the invention
The object of the present invention is to provide a kind of pleurocentrum formation system tools, can be punctured by unilateral side and realize bilateral
The effect of puncture, in use, operating time is short, perspective less, doctor and patient eat up few, good operation effect, safety and have
Effect property is higher, and equipment cost less investment, patient tissue wound effectively reduce.
Technical solution provided by the invention is as follows:
A kind of pleurocentrum formation system tool, comprising: controlled deflection device and vertebral body expanding balloon device；Wherein, institute
Stating controlled deflection device includes: the first outer tube, and distal end is connected with fixing head；First inner tube is set in first outer tube,
And it is provided with notch on the tube wall of the distal end of first inner tube, which is distributed in the default circumferential angle of first inner tube
In section；First operating mechanism is connected with first inner tube, and first inner tube can be driven to do axial feed motion；It is described
Vertebral body expanding balloon device includes: the second outer tube；Second inner tube, second inner tube is arranged in second outer tube, and institute
Stating has gap between the second inner tube and second outer tube, the distal end of second inner tube stretches out in second outer tube；It is curved
Curve capsule is set in the distal end of second inner tube, and between the bending sacculus and second outer tube and the second inner tube
Gap connection, the bending sacculus are in pre-bending shape when being not affected by external force；Wire is removably inserted in described
In two inner tubes, and the distal end for the wire being located in the distal end of second inner tube is a pre-bending structure, is being not affected by external work
When firmly, the distal end of the wire is in pre-bending shape.
Preferably, the pre-bending direction of the distal end of the wire and angle and the bending sacculus are essentially identical；And/or；
The pre-bending shape of the distal end of the pre-bending shape and wire of the bending sacculus is made by way of heat treatment.
Preferably, the pre-bending angle of the distal end of the wire is 70~90 °, and the pre-bending angle of the bending sacculus is 70
~90 °.
Preferably, the full-size of the cross section of the distal end of the wire is less than the cross of the rest part of the wire
The full-size in section.
Preferably, the head of the distal end of the wire has a round end, and the full-size of the cross section of the round end
Greater than the full-size of the cross section of the distal end of the wire
Preferably, the distal end of second inner tube is equipped at least one developing ring, and the developing ring is positioned at described curved
Curve is intracapsular.
Preferably, the distal end of the outer tube is fixed in one end of the bending sacculus, and the other end of the bending sacculus is solid
Due to the distal end of said inner tube；And/or；Predetermined angle section of the notch in first inner tube cover angle 150 °~
Between 300 °.
Preferably, first operating mechanism includes handle, adjusting screw rod and a fixing pipe, wherein is set on the handle
It is equipped with internal screw thread, one end of the adjusting screw rod is connect with the proximal end of first inner tube, and the other end and the handle spiral connect
It connects, the fixing pipe is provided with the through-hole passed through for the adjusting screw rod, the cross section phase of the through-hole and the adjusting screw rod
Adaptation, and the outer profile in section includes rectilinear strip.
Preferably, an elastic component is equipped between one end of the adjusting screw rod and the proximal end of first inner tube.
Preferably, the elastic component is a spring.
Preferably, it is provided with notch on the tube wall of the distal end of first outer tube, which is distributed in first outer tube
Default circumferential angular interval in, and the notch on first outer tube and the notch interlaced arrangement in first inner tube.
Preferably, notch covers angle between 150 °~300 ° in the predetermined angle section on first outer tube.
A kind of pleurocentrum formation system tool provided by the invention, can bring it is following at least one the utility model has the advantages that
1, the pleurocentrum formation system tool in the present invention is used to establish bending in centrum by controlled deflection device
Channel, channel are bent in target position, and what vertebral body expanding balloon device was used to prop up target position collapses centrum, are worn by unilateral side
Thorn realizes the effect that bilateral punctures, in use, operating time is short, perspective less, doctor and patient eat up few, safety and effectively
Property is higher, and equipment cost less investment, the tissue trauma of patient are small.
2, in the present invention, the handle in pleurocentrum formation system the first operating mechanism of tool is revolved relative to adjusting screw rod
Turn, adjusting screw rod is further driven to the first inner tube axis feeding fortune in fixing pipe linear movement, and by spring, connector
It is dynamic, it is bent the first inner tube at target position, establishes bending channel, the elasticity of the first inner tube can be improved by the way that spring is arranged
Bending strain, when creating channel in human body, safety is higher, and the bending angle of the first inner tube can be carried out by handle
Accurate control.
3, in the present invention, the distal end of the second inner tube and bending sacculus are pre-bending structure, meeting in vertebral body expanding balloon device
Restore pre-bending shape in target position along bending channel, consequently facilitating strutting the centrum collapsed at target position.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic of the invention, skill
Art feature, advantage and its implementation are further described.
Fig. 1 is the structural schematic diagram of controlled deflection device in pleurocentrum formation system tool of the invention；
Fig. 2 is the cross-sectional view of part-structure in controlled deflection device in pleurocentrum formation system tool shown in Fig. 1；
Fig. 3 is the decomposition texture schematic diagram of distal end in pleurocentrum formation system tool shown in Fig. 1；
Fig. 4 is the structural schematic diagram of the adjusting screw rod in the first operating mechanism shown in Fig. 3；
Fig. 5 is the structural schematic diagram of vertebral body expanding balloon device in pleurocentrum formation system tool of the invention；
Fig. 6 is the structural schematic diagram of wire in vertebral body expanding balloon device shown in Fig. 5.
Drawing reference numeral explanation:
First outer tube 11, notch 111, fixing head 12, the first inner tube 13, notch 131, the first operating mechanism 14, handle
141, adjusting screw rod 142, fixing pipe 143, spring 144, connector 145；
Second outer tube 21, the second inner tube 22 are bent sacculus 23, wire 24, distal end 241, developing ring 25, Y-valve 26.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.To make simplified form, only schematically showing and phase of the present invention in each figure
The part of pass, they do not represent its practical structures as product.
Specific embodiment one
This specific embodiment discloses a kind of more preferred embodiment of pleurocentrum formation system tool, pleurocentrum
Formation system tool includes controlled deflection device and vertebral body expanding balloon device, and controlled deflection device is curved for establishing in centrum
Triton road, channel are bent in target position, and what vertebral body expanding balloon device was used to prop up target position collapses centrum.
As shown in figures 1-4, controlled deflection device includes the first outer tube 11, the first inner tube 13 and the first operating mechanism 14, the
The distal end of one outer tube 11 is connected with fixing head 12, and the first inner tube 13 is set in the first outer tube 11, and the distal end of the first inner tube 13
Tube wall on be provided with notch 131, which is distributed in the default circumferential angular interval of the first inner tube 13, the first operating mechanism
14 are connected with the first inner tube 13, and the first inner tube 13 can be driven to do axial feed motion.
In clinic, the first operating mechanism 14 is connected with the first inner tube 13, it can be driven to do the movement of axial feed, when
One inner tube 13 is abutted against to fixing head 12, continue through the first operating mechanism 14 push the first inner tube 13, due to fixing head 12 with
First outer tube 11, which is connected, to be limited, when the first inner tube 13 is abutted against with bigger power to fixing head 12, so that it may so that the first inner tube
13 are forced to be bent, distributing position of the curved direction towards 13 upper cut 131 of the first inner tube.Then the bending meeting of the first inner tube 13
The first outer tube 11 is driven to be bent to same direction, to set up channel in centrum.Wherein, the distal end of the first inner tube 13 can be with
Fixing head 12 is affixed, and all notch in the first inner tube 13 circumferentially extend, parallel to each other, and it is curved to improve the first inner tube 13
Compliance.
In the present embodiment, it is provided with notch 111 on the tube wall of the distal end of the first outer tube 11, which is distributed in
In the default circumferential angular interval of one outer tube 11, and the notch 131 on the notch 111 and the first inner tube 13 on the first outer tube 11
Interlaced arrangement.When first outer tube 11 is equipped with notch with 13 interlaced arrangement of the first inner tube, the first outer tube 11 in bending by
Resistance it is smaller, be easier to be bent under the drive of the first inner tube 13.Specifically, preset angle of the notch 111 on the first outer tube
Angle is covered between 150 °~300 ° in degree section, and optimal angle is 270 °.Preset angle of the notch 131 in the first inner tube 13
Angle is covered between 150 °~300 ° in degree section, and optimal angle is 270 °.Also, inner tube and the equal preferred metal materials of outer tube
Pipe.
In the present embodiment, the first operating mechanism 14 in controlled deflection device includes handle 141,142 and of adjusting screw rod
One fixing pipe 143, wherein internal screw thread, the proximal end company of one end of adjusting screw rod 142 and the first inner tube 13 are provided on handle 141
It connects, the other end is connect with 141 spiral of handle, and fixing pipe 143 is provided with the through-hole passed through for adjusting screw rod 142, the through-hole and tune
The cross section of section screw rod 142 is adapted, and the outer profile in section includes rectilinear strip.
Since the outer profile of the cross section of the through-hole and adjusting screw rod 142 of fixing pipe 143 includes rectilinear strip, and through-hole
It is adapted with adjusting screw rod 142, so that 142 holding of adjusting screw rod will not rotate in through-holes.Handle 141 and adjusting screw rod
The connection of 142 spirals, then will drive adjusting screw rod 142 and do axis feed motion (spinning movement is limited) when rotating handle 141, interior
Pipe is connect with adjusting screw rod 142 equally does axis feed motion.By the through-hole of aforementioned fixing pipe 143 to adjusting screw rod 142
Anti-rotation makes the first inner tube 13 be only capable of doing axis feed motion under the drive of the first operating mechanism 14, will not be with adjusting screw rod
142 rotations.
Illustratively, the rectilinear strip part of 142 section outer profile of adjusting screw rod is screw thread discontinuities, structure such as Fig. 4 institute
Show.In addition, adjusting screw rod 142 and fixing pipe 143 can also take segmental structure, one section of matching for circular cross-section in the axial direction
It closes, another section of cooperation for square-section can achieve the effect similar with structure in Fig. 4, at this point, the foreign steamer of square-section
It include rectilinear strip on exterior feature.
In the present embodiment, one end of adjusting screw rod 142 and the first inner tube 13 are connect proximally by an elastic component and one
Part 145 is fixedly connected, specifically, elastic component is a spring 144, one end company of one end of adjusting screw rod 142 and a spring 144
It connects, the other end of spring 144 is connect with one end of connector 145, the proximal end of the other end of connector 145 and the first inner tube 13
(opposite one end with distal end) is affixed.Spring is set between adjusting screw rod and the first inner tube, is pushed in rotating handle and adjusts spiral shell
Bar advance when, spring-compressed stores certain elastic force, and spring one end is restricted by adjusting screw rod, one end by connector by
To the restriction of the first inner tube.The propulsion of first inner tube can drive the propulsion of fixing head.After power is stored in spring, head end meeting
According to the situation of being obstructed of front end, and under the action of spring restoring force, it is bent.Compared to linear bending, elastic bending strain
Property it is high, and when acting on human body creation channel, improve safety.
As shown in Figure 5,6, vertebral body expanding balloon device includes the second outer tube 21, the second inner tube 22, bending sacculus 23 and gold
Belonging to silk 24, the second inner tube 22 is arranged in the second outer tube 21, and has gap between the second inner tube 22 and the second outer tube 21, and second
The distal end of inner tube 22 stretches out in the second outer tube 21, and bending sacculus 23 is set in the distal end of the second inner tube 22, is bent the one of sacculus 23
The distal end of the outer tube is fixed at end, and the other end is fixed on the distal end of said inner tube, and be bent sacculus 23 and the second outer tube 21 and
The proximal end of gap connection between second inner tube 22, the second outer tube 21 and the second inner tube 22 is connect with a Y-valve 26, passes through Y type
Gap of the pressure medium between the second outer tube 21 and the second inner tube 22 can be input in bending sacculus 23 by valve 26 keeps its swollen
Swollen, being bent sacculus 23 is in pre-bending shape when being not affected by external force.Wire 24 is removably inserted in the second inner tube 22,
And the distal end 241 for being located at the wire 24 in the distal end of the second inner tube 22 is a pre-bending structure, is being not affected by applied external force
When, the distal end 241 of wire 24 is in pre-bending shape.
In a situation of use, when vertebral body expanding balloon device has just enter into the channel that controlled deflection device is established in centrum,
The front end in channel is linear type channel, at this point, stretching out in the bending sacculus 23 of the distal end of outer tube and the distal end of wire 24 straight
It is of a straight line type structure substantially under the constraint of linear passage, consequently facilitating vertebral body expanding balloon device is by controlled deflection device in vertebra
The channel established in vivo, after the distal end of the second inner tube 22 reaches target position, since controlled deflection device is built in target position
Vertical channel is bending channel, and the distal end of the second inner tube 22 and dilating sacculus can restore in target position or restore pre- substantially
Bending shape, then make its expansion by carrying out pressurization to bending sacculus 23, centrum is collapsed to further prop up.
It should be strongly noted that clinically, controlled deflection device can be passed through according to actually detected image and data
Control the bending degree in the channel that target position is established, and the bending sacculus and gold for selecting bending degree identical or essentially identical
Belong to silk.
In the present embodiment, the pre-bending direction of the distal end of wire 24 and angle and bending sacculus 23 are essentially identical, bending
Range is 70~90 °, and the pre-bending shape for being bent the pre-bending shape of sacculus 23 and the distal end of wire 24 passes through heat treatment
Mode be made.In the present embodiment, the distal end of the second inner tube 22 is equipped with a pair of of developing ring 25, and developing ring 25 is located at bending
In sacculus 23, under perspective, balloon position can be shown by developing ring 25.
It in clinical operation, first passes through controlled deflection device and establishes channel in centrum, the process for establishing channel is first will
In first outer tube 11 and the first inner tube 13 insertion centrum, after the first outer tube 11 reaches target position, the first operating mechanism is controlled
14, rotating handle 141 makes through-hole linear motion of the adjusting screw rod 142 in fixing pipe 143, and adjusting screw rod 142 passes through spring
144, connector 145 is further driven to the 13 axis feed motion of the first inner tube.Since the first inner tube 13 is equipped with notch 131 and the
The axis feed motion of the distal end of one inner tube is fixed first 12 and is stopped, and therefore, the distal end of the first inner tube 13 can be to equipped with notch
131 direction bending is further driven to 11 bending of the first outer tube, to form bending channel at target position.Rotary handle
141, the pressure for being applied to the first inner tube 13 is removed, makes the first outer tube 11 and the first inner tube 13 according to return channel deformation, exits
Centrum.
Then, vertebral body expanding balloon device is made to enter centrum along the channel that controlled deflection device is established in centrum, the
After the distal end of two inner tubes 22 and wire 24 reaches target position, under the guidance of bending channel, the second inner tube 22 and wire
24 distal end is gradually recovered pre-bending shape, wire 24 is extracted out, through Y-valve 26 between the second outer tube 21 and the second inner tube 22
Gap to bending sacculus 23 in input pressure medium, make be bent sacculus 23 expanded at target position, prop up and collapse centrum, so
After take pressure medium away, so that vertebral body expanding balloon device is exited centrum, then, then collapsing at centrum inject bone cement.
Pleurocentrum formation system tool disclosed in the present embodiment can puncture the effect for realizing that bilateral punctures by unilateral,
The advantages of combining two kinds of modus operandis, operating time is short, perspective less, doctor and patient eat up few, improve safety and effectively
Property, the input cost of operating equipment is reduced, is particularly suitable in Percutaneous kyplasty (PKP).
Certainly, in other specific embodiments in pleurocentrum formation system tool of the invention, controlled deflection device
In: the distal end of the first inner tube can directly be supported and be set to fixing head, be not required to affixed；In first operating mechanism, handle can be relative to solid
Determine the connection of pipe spiral, converts linear motion for the rotary motion of handle relative fixing tube, correspondingly, the through-hole in fixing pipe
It is adaptively adjusted；The notch property of can choose setting on first outer tube；The density of first outer tube and the notch in the first inner tube
And its covers angle and can according to need adjustment；In vertebral body expanding balloon device: the pre- bent angle of bending sacculus and wire
Degree, shape and its processing method can according to need adjustment；Elastic component in addition to spring be also an option that by elastic material (such as
Rubber) made from connector, the both ends of elastic component can be fixedly connected on adjusting screw rod and the first inner tube or on-fixed connection
(that is, directly elastic component on-fixed is set between adjusting screw rod and the first inner tube)；Developing ring in second inner tube
Structure, number and installation site also can according to need adjustment, no longer repeat one by one herein.
Specific embodiment two
This specific embodiment discloses another pleurocentrum formation system tool, structure and one base of specific embodiment
This is identical, the difference is that only, the present embodiment further change for the wire in vertebral body expanding balloon device
Into.
In the present embodiment, the full-size of the cross section of the distal end of wire is less than the cross section of wire rest part
Full-size, specifically, wire in addition to the rest part of distal end cross section be circle, the cross section of the distal end of wire
To have round (be equivalent to circle having cut a part) jaggy, and notch is located at the distal end of wire and is in pre-bending shape
When concave surface.When being arranged in this way, the rigidity of the distal end of wire is reduced, makes it easier to be bent.
In the present embodiment, the head of the distal end of wire has a round end, and the full-size of the cross section of round end is big
Full-size in the cross section of the distal end of wire, the setting of round end, convenient for the assembly of wire and bending sacculus, and metal
The maximum outside diameter of silk is also greater than the bore for being bent the opening (for being inserted into wire) of sacculus, when being arranged in this way, can also avoid
During bending sacculus enters centrum, wire is detached from bending sacculus.Also, the setting of round end can also avoid wire
The head of distal end puncture bending sacculus.
Certainly, when the section of the distal end of wire is to have jaggy round, notch here may be located on metal
On convex surface when the distal end of silk is in bending state, it is of course also possible to when the distal end that wire is arranged in is in bending state
Two side ends；It the section of the distal end of wire can also be to be complete round, as long as its diameter is less than the diameter of section of rest part
?；The size of the round end on the head of the distal end of wire, which can according to need, to be adjusted.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of pleurocentrum formation system tool characterized by comprising
Controlled deflection device and vertebral body expanding balloon device；
The controlled deflection device includes:
First outer tube, distal end are connected with fixing head；
First inner tube is set in first outer tube, and is provided with notch on the tube wall of the distal end of first inner tube, this is cut
Mouth is distributed in the default circumferential angular interval of first inner tube；
First operating mechanism is connected with first inner tube, and first inner tube can be driven to do axial feed motion；
The vertebral body expanding balloon device includes:
Second outer tube；
Second inner tube, second inner tube are arranged in second outer tube, and second inner tube and second outer tube it
Between have gap, the distal end of second inner tube stretches out in second outer tube；
It is bent sacculus, is set in the distal end of second inner tube, and the bending sacculus and second outer tube and the second inner tube
Between gap connection, the bending sacculus is when being not affected by external force in pre-bending shape；
Wire is removably inserted in second inner tube, and the wire being located in the distal end of second inner tube
Distal end is a pre-bending structure, and when being not affected by applied external force, the distal end of the wire is in pre-bending shape.
2. pleurocentrum formation system tool as described in claim 1, it is characterised in that:
The pre-bending direction of the distal end of the wire and angle and the bending sacculus are essentially identical；
And/or；
The pre-bending shape of the distal end of the pre-bending shape and wire of the bending sacculus is by way of heat treatment
It is made.
3. pleurocentrum formation system tool as described in claim 1, it is characterised in that:
The pre-bending angle of the distal end of the wire is 70~90 °, and the pre-bending angle of the bending sacculus is 70~90 °；
And/or；
The full-size of the cross section of the distal end of the wire is less than the maximum of the cross section of the rest part of the wire
Size；
And/or；
The head of the distal end of the wire has a round end, and the full-size of the cross section of the round end is greater than the metal
The full-size of the cross section of the distal end of silk.
4. pleurocentrum formation system tool according to claim 1, it is characterised in that:
The distal end of second inner tube is equipped at least one developing ring, and to be located at the curved ball intracapsular for the developing ring.
5. pleurocentrum formation system tool according to claim 1, it is characterised in that:
The distal end of the outer tube is fixed in one end of the bending sacculus, and the other end of the bending sacculus is fixed on said inner tube
Distal end；
And/or；
Notch covers angle between 150 °~300 ° the predetermined angle section in first inner tube.
6. pleurocentrum formation system tool according to claim 1, it is characterised in that:
First operating mechanism includes handle, adjusting screw rod and a fixing pipe, wherein it is provided with internal screw thread on the handle,
One end of the adjusting screw rod is connect with the proximal end of first inner tube, and the other end is connect with the handle spiral, the fixation
Pipe is provided with the through-hole passed through for the adjusting screw rod, and the through-hole is adapted with the cross section of the adjusting screw rod, and section
Outer profile include rectilinear strip.
7. pleurocentrum formation system tool according to claim 6, it is characterised in that:
An elastic component is equipped between one end of the adjusting screw rod and the proximal end of first inner tube.
8. pleurocentrum formation system tool according to claim 7, it is characterised in that:
The elastic component is a spring.
9. pleurocentrum formation system tool according to claim 1, it is characterised in that:
It is provided with notch on the tube wall of the distal end of first outer tube, which is distributed in the default circumferential angle of first outer tube
It spends in section, and the notch on first outer tube and the notch interlaced arrangement in first inner tube.
10. pleurocentrum formation system tool according to claim 9, it is characterised in that:
Notch covers angle between 150 °~300 ° the predetermined angle section on first outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811460212.2A CN109350210B (en) | 2018-11-30 | 2018-11-30 | Unilateral centrum system instrument that takes shape |
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| CN110327107A (en) * | 2019-08-16 | 2019-10-15 | 西安市红会医院 | Integral target is to kyphoplasty system |
| CN112220504A (en) * | 2020-09-23 | 2021-01-15 | 山前（珠海）医疗科技有限公司 | a steerable sheath |
| CN117297743A (en) * | 2023-11-20 | 2023-12-29 | 上海朗迈医疗器械科技有限公司 | Controllable bending type bone filler pushing and injecting equipment |
| CN118490966A (en) * | 2024-05-13 | 2024-08-16 | 适介医疗科技(广州)有限公司 | Anchored medical catheter with controllable bending |
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| CN117297743A (en) * | 2023-11-20 | 2023-12-29 | 上海朗迈医疗器械科技有限公司 | Controllable bending type bone filler pushing and injecting equipment |
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| CN109350210B (en) | 2024-02-09 |
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Denomination of invention: A unilaterally vertebroplasty system tool Granted publication date: 20240209 Pledgee: Bank of Shanghai Limited by Share Ltd. Minhang branch Pledgor: SHANGHAI LEGEND MEDICAL TECHNOLOGY CO.,LTD. Registration number: Y2025980039914 |