CN207444980U - One kind is begun to speak instrument - Google Patents
One kind is begun to speak instrument Download PDFInfo
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- CN207444980U CN207444980U CN201720078173.4U CN201720078173U CN207444980U CN 207444980 U CN207444980 U CN 207444980U CN 201720078173 U CN201720078173 U CN 201720078173U CN 207444980 U CN207444980 U CN 207444980U
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- speak
- beginning
- transmission shaft
- adjustment axis
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Abstract
It begins to speak instrument the utility model is related to one kind,Including Handleset and moving parts,The Handleset includes adjusting mechanism,The moving parts include part of beginning to speak,Connector,Adjustment axis and transmission shaft,The near-end of the adjustment axis is fixed on the near-end of the Handleset,The distal end of the adjustment axis is flexibly connected with the near-end of the part of beginning to speak,The distal end of the connector sets globe joint,The near-end of the part of beginning to speak is set and globe joint spherical inner concave surface in mating connection,The near-end of the connector is fixedly connected with the distal end of the transmission shaft,The near-end of the transmission shaft is fixedly connected with the Handleset,The driving sleeve is outside the adjustment axis,It operates the adjusting mechanism and passes through transmission shaft adjustment axis crankmotion vertically,And the operation adjusting mechanism causes the part of beginning to speak to be rotated compared with the connector;The utility model can be precisely controlled part rotation angle of beginning to speak, realize self-locking, convenient operation and control.
Description
Technical field
The utility model belongs to medical instruments field, is specifically related to one kind and begins to speak instrument.
Background technology
Compression fracture of vertabral body is mainly in the elderly caused by osteoporosis, as aging of population deepens continuously,
The patient for suffering from this disease is also increasing sharply, and percutaneous vertbroplasty (PVP) or Percutaneous kyplasty (PKP) exist
Irreplaceable role is wherein played.
At present, matching used instrument of beginning to speak has straight and two kinds of forms with bent angle in pyramid plastic operation.Special
In sharp CN201879801U, a kind of expansion bradawl is disclosed, which is straight, needs to coordinate in surgical procedure
The bilateral of traditional vertebral plasty instrument, which punctures, to be used;It which disclose the instrument of beginning to speak that a kind of distal end carries bent angle, Ke Yipei
Bent angle instrument is closed to use, but its channel size opened up is limited by bistrique size, and general diameter is smaller, in addition, in the U.S.
In patent US2010/0268234, disclose one kind and begin to speak instrument, used cutter head angle adjustment structure is to pass through adjustment axis
Direct inlay card is on cutter head, then elasticity through transmission shaft in itself realizes the control of cutter head angle, and the control of this mode is stablized
Property it is poor, there is a situation where in use by bone top return, can not realize purpose of beginning to speak.
The content of the invention
The utility model aim is to solve problems of the prior art, provides one kind and be precisely controlled part rotation of beginning to speak
Angle realizes self-locking, the instrument of beginning to speak of convenient operation and control.
The utility model aim is achieved through the following technical solutions:
One kind is begun to speak instrument, and including Handleset and moving parts, the Handleset includes adjusting mechanism, the movement
Component includes begin to speak part, connector, adjustment axis and transmission shaft, and the near-end of the adjustment axis is fixed on the near of the Handleset
End, the distal end of the adjustment axis are flexibly connected with the near-end of the part of beginning to speak, and the distal end of the connector sets globe joint, institute
State part of beginning to speak near-end set with globe joint spherical inner concave surface in mating connection, the near-end of the connector with it is described
The distal end of transmission shaft is fixedly connected, and the near-end of the transmission shaft is fixedly connected with the Handleset, and the driving sleeve is mounted in
Outside the adjustment axis, the adjusting mechanism is operated by transmission shaft adjustment axis crankmotion vertically,
And the operation adjusting mechanism causes the part of beginning to speak to be rotated compared with the connector.
The utility model aim is also further realized by following preferred technical solution:
Preferably, the adjusting mechanism includes the first locating part, the first screw channel, the first sliding block, rotating member, the second limit
Position part, the second screw channel and the second sliding block, first locating part are flexibly connected with first screw channel, and described first
Sliding block be mounted on first locating part on, the rotating member is slidably connected with first screw channel, the rotating member and
Second locating part is fixedly connected, second sliding block be mounted on second locating part on, second screw channel with
Second sliding block is fixedly connected.
Preferably, the near-end of the adjustment axis is fixedly connected with second sliding block, the near-end of the transmission shaft with it is described
Second locating part is fixedly connected.
Preferably, the distal end of the adjustment axis sets connecting rod, is set in the connecting rod and adjusts pin hole, described to begin to speak
The near-end of part sets part pin hole of beginning to speak, and the adjusting pin hole is flexibly connected with the part pin hole of beginning to speak by pin.
Preferably, the near-end of the part of beginning to speak can be rotated compared with the distal end of the connector, rotational angle for 0~
90°。
Preferably, guide rail being arranged in the outer wall of the transmission shaft, the near-end of the guide rail is flexibly connected with the rotating member,
The proximal part of the guide rail is fixedly connected with first sliding block.
Preferably, the distal portions of the guide rail are stationary curved section, described stationary curved section of bending angle for 15~
130°。
Preferably, the proximal part of the guide rail is made of stainless steel tube or marmem pipe or polymer tube,
Described stationary curved section is made of memory alloy pipes.
Preferably, the distal portions of the adjustment axis and the transmission shaft can coordinate the stationary curved section of adaptability curved
It is bent.
Preferably, protecting pipe is arranged in the outer wall of the guide rail, the near-end of the protecting pipe is consolidated with first locating part
Fixed connection.
Compared with prior art, the beneficial effects of the utility model are mainly reflected in:
1st, the instrument of beginning to speak of the utility model is that operation handle component is past vertically by the transmission shaft adjustment axis
It answers rotary motion and controls rotation angle of the part compared with connector of beginning to speak, a preferable size can be established inside centrum
Controllable bone filler injection cavity, can be very good to avoid non-lesion region in centrum, bone filler root during beginning to speak
Even dispersion is obtained in entire centrum according to injection cavity, enhances centrum mechanical stability.
2nd, the utility model begins to speak the spherical inner concave surface of the part near-end of beginning to speak of instrument and the globe joint of connector distal end leads to
Ball-joint connection is crossed, pin hole is adjusted and part pin hole of beginning to speak is flexibly connected the rotation angle that can accurately control part of beginning to speak with pin
Realize self-locking, rotation angle is big, easy to operate.
3rd, the begin to speak guide rail distal end of instrument of the utility model is stationary curved section, and the distal end of adjustment axis and transmission shaft all may be used
To coordinate guide rail adaptive curved, it is smooth that target location auxiliary part of beginning to speak can be reached according to demand under the control of adjusting mechanism
Realization is begun to speak.
4th, the begin to speak protecting pipe of instrument of the utility model can protect part of beginning to speak is straight to withdraw vertically so that instrument of beginning to speak
Operation it is safer.
5th, the begin to speak angle of regulation range of the part of beginning to speak of instrument of the utility model is 0~90 °, by flexible modulation angle,
The cavity of size needed for being set in centrum, while the harder region of part sclerotin can be avoided, make to begin to speak to smoothly complete.
6th, the begin to speak adjustment axis of instrument of the utility model is made of rigid material, is a silk or a pipe or is more
Silk and pipe combination, the adjustment axis distal end bending when can axially rotate, because adjustment axis be in the axial direction it is rigid,
It will not be deformed in operating process, can effectively control the angle for part of beginning to speak.
Description of the drawings
Fig. 1 is that the utility model is begun to speak the structure diagram of instrument;
Fig. 2 is that the utility model instrument of beginning to speak enters the schematic diagram of centrum;
Fig. 3 a are that the utility model is begun to speak the Handleset sectional view vertically of instrument;
Fig. 3 b be the utility model begin to speak instrument Handleset in the first locating part structure diagram;
Fig. 3 c be the utility model begin to speak instrument Handleset in the first screw channel structure diagram;
Fig. 3 d be the utility model begin to speak instrument Handleset in the first sliding block structure diagram;
Fig. 3 e be the utility model begin to speak instrument Handleset in the second sliding block structure diagram;
Fig. 3 f be the utility model begin to speak instrument Handleset in rotating member structure diagram;
Fig. 3 g be the utility model begin to speak instrument Handleset in the second locating part structure diagram;
Fig. 3 h be the utility model begin to speak instrument Handleset in the second screw channel structure diagram;
Fig. 4 a are that the utility model is begun to speak the moving parts sectional view vertically of instrument;
Fig. 4 b be the utility model begin to speak instrument moving parts in begin to speak the structure diagram of part;
Fig. 4 c be the utility model begin to speak instrument moving parts in connector structure diagram;
Fig. 4 d be the utility model begin to speak instrument moving parts in adjustment axis distal portions enlarged drawing;
Fig. 5 be the utility model begin to speak instrument moving parts in begin to speak the motion state diagram of part;
Fig. 6 be the utility model begin to speak instrument moving parts in begin to speak the rotation schematic diagram of part;
Fig. 7 is the structure diagram of puncture needle tubing component;
Wherein, 1 is Handleset, and 2 be moving parts, and 3 be puncture needle tubing component, and 11 be the first locating part, and 12 be
One screw channel, 13 be the first sliding block, and 14 be rotating member, and 15 be the second locating part, and 16 be the second screw channel, and 17 be the second cunning
Block, 21 be part of beginning to speak, and 211 be spherical inner concave surface, and 212 be part pin hole of beginning to speak, and 22 be connector, and 221 be globe joint, and 23 be to adjust
Nodal axisn, 24 be transmission shaft, and 25 be guide rail, and 26 be pin, and 27 be protecting pipe, and 231 be to adjust pin hole, and 232 be connecting rod, 111
It is the first limited block, 112 be the first banking stop, and 131 be the first outer convex thread, and 151 be the second limited block, and 152 be the second /V
Piece, 171 be the second outer convex thread, and 31 be puncture needle tubing handle, and 32 be puncture needle tubing.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation below in conjunction with attached drawing
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
Near-end described in the utility model refers to one end close to operator, and the distal end refers to away from surgical procedure
One end of person.
As shown in Fig. 1,2 and Fig. 4 a-4d, the instrument of beginning to speak of the utility model, including Handleset 1 and moving parts 2, institute
Stating Handleset 1 includes adjusting mechanism, and the moving parts 2 include begin to speak part 21, connector 22, adjustment axis 23 and transmission shaft
24, the near-end of the adjustment axis 23 is fixed on the near-end of the Handleset 1, distal end and the part of beginning to speak of the adjustment axis 23
21 near-end flexible connection, the distal end of the connector 22 set globe joint 221, and the near-end of the part 21 of beginning to speak is set and institute
State the spherical inner concave surface 211 in mating connection of globe joint 221, the distal end of the near-end of the connector 22 and the transmission shaft 24
It is fixedly connected, the near-end of the transmission shaft 24 is fixedly connected with the Handleset 1, and the transmission shaft 24 is sleeved on the adjusting
Outside axis 23, the adjusting mechanism is operated by 24 adjustment axis 23 of transmission shaft crankmotion vertically, and
And the operation adjusting mechanism causes the part 21 of beginning to speak to be rotated compared with the connector 22.The instrument of beginning to speak of the utility model
The controllable bone filler injection cavity of a preferable size can be established inside centrum, can be very good during beginning to speak
Non- lesion region in centrum is avoided, bone filler obtains even dispersion according to injection cavity in entire centrum, enhances centrum power
Learn stability.
As shown in Fig. 3 a-3h, the adjusting mechanism include the first locating part 11, the first screw channel 12, the first sliding block 13,
Rotating member 14, the second locating part 15, the second screw channel 16 and the second sliding block 17, first locating part 11 is by the first limited block
111 and two the first banking stops 112 being fixedly connected with the near-end of first limited block 111 form, first screw thread leads to
Road 12 is set in outside two the first banking stops 112, and distal end is connected by card slot with the near-end of the first limited block 111, the first limit
Position 11 and first screw channel 12 of part can relatively rotate, and first sliding block 13 is slidably mounted on first locating part 11
Between two banking stops 112, the first outer convex thread 131, the first outer convex thread 131 are provided on first sliding block 13
It is engaged with the internal thread of first screw channel 12 so that first screw channel 12 and 13 screw thread of the first sliding block
Connection.The rotating member 14 is arranged on outside first screw channel 12, is slided by limiting slot and first screw channel 12
Dynamic connection, the near-end of the rotating member 14 are fixedly connected with second locating part 15, and second locating part 15 is by the second limit
Position block 151 and two the second banking stops 152 being fixedly connected with the near-end of second limited block 151 form, and described second slides
Block 17 is slidably mounted between two the second banking stops 152 of second locating part 15, and second screw channel 16 is arranged
Outside two the second banking stops 152, distal end is connected with the near-end of the second limited block 151, is set on second sliding block 17
There is the second outer convex thread 171, the second outer convex thread 171 is engaged with the internal thread of second screw channel 16 so that
Second screw channel 16 is threadedly coupled with second sliding block 17.
As shown in Fig. 4 a-4d and Figures 5 and 6, there are cutting edge, the near-end of the part 21 of beginning to speak and institute in the distal end for beginning to speak part 21
The distal end for stating connector 22 is connected by spherical inner concave surface 211 with 221 ball-joint of globe joint, the near-end of the connector 22 with
The distal end of the transmission shaft 24 is fixedly connected, and the transmission shaft 24 is sleeved on outside the adjustment axis 23, the adjustment axis 23 it is remote
End sets connecting rod 232, is set in the connecting rod 232 and adjusts pin hole 231, and the near-end of the part 21 of beginning to speak sets part of beginning to speak
Pin hole 212, the adjusting pin hole 231 are flexibly connected with the part pin hole 212 of beginning to speak by pin 26.The adjustment axis 23 can
With it is accurate control begin to speak part 21 rotation angle and realize self-locking.Guide rail 25 is arranged in the outer wall of the transmission shaft 24, it is described to lead
The near-end of rail 25 is flexibly connected with the rotating member 14, and the proximal part of the guide rail 25 is fixed with first sliding block 13 to be connected
It connects, the distal end of the guide rail 25 and the proximate dimensional of the connector 22 coordinate.The distal portions of the guide rail 25 are fixed curved
Tune, described stationary curved section of bending angle is 15~130 °.And the distal portions of adjustment axis 23 and transmission shaft 24 can
Coordinate guide rail 25 stationary curved section is adaptive curved, and it is auxiliary can to reach target location according to demand under the control of adjusting mechanism
Part 21 of beginning to speak is helped smoothly to realize to begin to speak.The proximal part of the guide rail 25 is by stainless steel tube or marmem pipe or macromolecule
Pipe is made, and described stationary curved section of the guide rail 25 is made of memory alloy pipes, for example, being set on the memory alloy pipes
It is equipped with cutting gap and passes through heat treatment process directly sizing and be made.Protecting pipe 27 is arranged in the outer wall of the guide rail 25, it is described
The near-end of protecting pipe 27 is fixedly connected with first locating part 11, can be protected and be begun to speak that part 21 is straight to be withdrawn vertically so that
It operates safer.
The near-end of the guide rail 25 is flexibly connected with the rotating member 14, the proximal part of the guide rail 25 and described first
Sliding block 13 is fixedly connected, and rotates the rotating member 14 and the first screw channel 12 is controlled to rotate, to drive the first sliding block 13 vertically
It reciprocatingly slides, and then the guide rail 25 is controlled to reciprocatingly slide vertically.The near-end of the transmission shaft 24 and second locating part
15 are fixedly connected, and the distal end of the transmission shaft 24 is fixedly connected with the near-end of the connector 22, and operating the rotating member 14 can
To control the transmission shaft 24 that the connector 22 is driven to rotate, therefore the operation rotating member 14 just can control the connector
22 vertically crankmotion can simultaneously drive 21 crankmotion of part of beginning to speak, the near-end of the adjustment axis 23 with it is described
Second sliding block 17 is fixedly connected, and the distal end of the adjustment axis 23 is flexibly connected with the part 21 of beginning to speak proximally by pin 26,
Rotate second screw channel 16 controls the adjustment axis 23 to move back and forth to realize by controlling the second sliding block 17
The adjusting for 21 angle of part of beginning to speak is stated, 21 rotational angle of part of beginning to speak is 0~90 °.The adjustment axis 23 is a silk or one
Pipe is composed of multi-filament and pipe.The adjustment axis 23 is rigid in the axial direction, therefore in operation will not
Deformation can effectively control the angle for part 21 of beginning to speak.It is led since the distal portions of adjustment axis 23 and transmission shaft 24 can coordinate
Stationary curved section of 25 distal portions of rail is adaptive curved, therefore the distal portions of the adjustment axis 23 also may be used while bending
To axially rotate, therefore the rotation angle for part of beginning to speak can be accurately controlled, rotation angle is big, easy to operate.By flexibly adjusting
Angle is saved, the cavity of required size can be opened up in centrum, while the harder region of part sclerotin can be avoided, makes to begin to speak smoothly
It completes.
As shown in fig. 7, in percutaneous vertebroplasty operation, sick vertebra is positioned under C-arm perspective first, completes to puncture, build
Vertical service aisle, the instrument that will begin to speak are inserted into puncture needle tubing component 3, and the first locating part 11 is stuck in puncture needle tubing handle 31
On, rotary motion part 14, the first sliding block 13 is slided along the first locating part 11 to distal end, and the first screw channel 12 with first by sliding
The screw thread of block 13, which engages to rotate to distal end, to advance, and the second locating part 15, the second sliding block 17 and the second screw channel 16 follow rotation
Part 14 rotates, and stationary curved section of 25 distal end of guide rail is stretched out from protecting pipe 27, is entered by puncture needle tubing 32 in centrum extremely
Rational position (being determined according to sick vertebra size) (its 25 axially translated entrance of middle guide, part 21 of beginning to speak, connector 22, adjustment axis
23rd, transmission shaft 24 is rotated into);Then the second screw channel 16 is rotated, the second sliding block 17 is transported along the second locating part 15 to distal end
Dynamic, 232 distal movement of connecting rod of adjustment axis 23 and its distal end while, promotes part 21 of beginning to speak, and part 21 of beginning to speak is along connector 22
On ball-joint rotate, 0~90 ° of rotational angle (preferably 90 °), then negative direction rotary motion part 14, the first sliding block 13 is along the
One locating part 11 proximally slides, and rotating member 14 with being flexibly connected for 25 near-end of guide rail by proximally rotating advance, the second limit
Position part 15, the second sliding block 17 and the second screw channel 16 follow rotating member 14 to rotate, and stationary curved section of 25 distal end of guide rail from vertebra
Movement (its 25 axially translated entrance of middle guide, part 21 of beginning to speak, connector 22, adjustment axis 23, the transmission into protecting pipe 27 in vivo
Axis 24 is rotated into), after part 21 of beginning to speak enters puncture needle tubing component 3, rotate the second screw channel 16 and pass through adjustment axis 23
To begin to speak 21 straightening of part, then withdraw from instrument of beginning to speak, and inject bone filler, bone filler finally by bone filler transport system
Enter cavity and the even dispersion in centrum from bone filler delivery cannula.
Finally it should be noted that the foregoing is merely the utility model preferred embodiment, be not used to limit
The utility model processed, all any modification, equivalent and improvement made within the spirit and principle of the utility model etc.,
It should be included within the scope of protection of this utility model.
Claims (10)
- The instrument 1. one kind is begun to speak, it is characterised in that:Including Handleset (1) and moving parts (2), Handleset (1) bag Adjusting mechanism is included, the moving parts (2) include begin to speak part (21), connector (22), adjustment axis (23) and transmission shaft (24), institute The near-end for stating adjustment axis (23) is fixed on the near-end of the Handleset (1), and the distal end of the adjustment axis (23) is begun to speak with described The near-end flexible connection of part (21), the distal end of the connector (22) set globe joint (221), the part of beginning to speak (21) it is near End is set and the globe joint (221) spherical inner concave surface (211) in mating connection, the near-end of the connector (22) and institute The distal end for stating transmission shaft (24) is fixedly connected, and the near-end of the transmission shaft (24) is fixedly connected with the Handleset (1), described Transmission shaft (24) is sleeved on the adjustment axis (23) outside, operates the adjusting mechanism and passes through the transmission shaft (24) tune Nodal axisn (23) crankmotion vertically, and operate the adjusting mechanism and described to begin to speak part (21) compared with the company Fitting (22) rotates.
- 2. instrument according to claim 1 of beginning to speak, it is characterised in that:The adjusting mechanism include the first locating part (11), First screw channel (12), the first sliding block (13), rotating member (14), the second locating part (15), the second screw channel (16) and Two sliding blocks (17), first locating part (11) are flexibly connected with first screw channel (12), first sliding block (13) On first locating part (11), the rotating member (14) is slidably connected with first screw channel (12), described Rotating member (14) is fixedly connected with second locating part (15), and second sliding block (17) is mounted on second locating part (15) on, second screw channel (16) is fixedly connected with second sliding block (17).
- 3. instrument according to claim 2 of beginning to speak, it is characterised in that:The near-end of the adjustment axis (23) is slided with described second Block (17) is fixedly connected, and the near-end of the transmission shaft (24) is fixedly connected with second locating part (15).
- 4. instrument according to claim 3 of beginning to speak, it is characterised in that:The distal end of the adjustment axis (23) sets connecting rod (232), set on the connecting rod (232) and adjust pin hole (231), the near-end of the part of beginning to speak (21) sets part pin hole of beginning to speak (212), the adjusting pin hole (231) is flexibly connected with the part pin hole (212) of beginning to speak by pin (26).
- 5. instrument according to claim 4 of beginning to speak, it is characterised in that:The near-end of the part of beginning to speak (21) can be compared with described The distal end of connector (22) rotates, and rotational angle is 0~90 °.
- 6. instrument according to claim 2 of beginning to speak, it is characterised in that:Guide rail is arranged in the outer wall of the transmission shaft (24) (25), the near-end of the guide rail (25) is flexibly connected with the rotating member (14), the proximal part of the guide rail (25) with it is described First sliding block (13) is fixedly connected.
- 7. instrument according to claim 6 of beginning to speak, it is characterised in that:The distal portions of the guide rail (25) are stationary curved Section, described stationary curved section of bending angle is 15~130 °.
- 8. instrument according to claim 7 of beginning to speak, it is characterised in that:The proximal part of the guide rail (25) is by stainless steel Pipe or marmem pipe or polymer tube are made, and described stationary curved section is made of memory alloy pipes.
- 9. instrument according to claim 7 of beginning to speak, it is characterised in that:The adjustment axis (23) and the transmission shaft (24) Distal portions can coordinate described stationary curved section it is adaptive curved.
- 10. instrument according to claim 6 of beginning to speak, it is characterised in that:Protecting pipe is arranged in the outer wall of the guide rail (25) (27), the near-end of the protecting pipe (27) is fixedly connected with first locating part (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201720078173.4U CN207444980U (en) | 2017-01-22 | 2017-01-22 | One kind is begun to speak instrument |
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CN201720078173.4U CN207444980U (en) | 2017-01-22 | 2017-01-22 | One kind is begun to speak instrument |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106618653A (en) * | 2017-01-22 | 2017-05-10 | 宁波华科润生物科技有限公司 | Cavity opening instrument |
WO2020103710A1 (en) * | 2018-11-20 | 2020-05-28 | 宁波华科润生物科技有限公司 | Integrated multifunctional vertebroplasty instrument |
CN112842450A (en) * | 2021-01-07 | 2021-05-28 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
CN112971907A (en) * | 2021-01-07 | 2021-06-18 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
-
2017
- 2017-01-22 CN CN201720078173.4U patent/CN207444980U/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106618653A (en) * | 2017-01-22 | 2017-05-10 | 宁波华科润生物科技有限公司 | Cavity opening instrument |
WO2020103710A1 (en) * | 2018-11-20 | 2020-05-28 | 宁波华科润生物科技有限公司 | Integrated multifunctional vertebroplasty instrument |
CN112842450A (en) * | 2021-01-07 | 2021-05-28 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
CN112971907A (en) * | 2021-01-07 | 2021-06-18 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
CN112842450B (en) * | 2021-01-07 | 2022-06-14 | 宁波华科润生物科技有限公司 | Bone drill for centrum |
CN112971907B (en) * | 2021-01-07 | 2022-07-05 | 宁波华科润生物科技有限公司 | Bone drill for centrum |
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