CN217430151U - Pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up - Google Patents
Pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up Download PDFInfo
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- CN217430151U CN217430151U CN202221202723.6U CN202221202723U CN217430151U CN 217430151 U CN217430151 U CN 217430151U CN 202221202723 U CN202221202723 U CN 202221202723U CN 217430151 U CN217430151 U CN 217430151U
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- pedicle screw
- locking mechanism
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- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 210000000078 claw Anatomy 0.000 claims abstract description 29
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- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up. The lower end of an outer sleeve of a screw driver on the pedicle screw is provided with a first thread section, and the upper end of the outer sleeve is connected with a locking mechanism; the locking mechanism comprises a connecting pipe, a connecting block and a holding claw, the connecting pipe is connected with the upper end of the outer sleeve, a first adjusting type limiting mechanism is arranged on the connecting block, an external thread is arranged at one end of the holding claw, the locking mechanism also comprises a locking cap, and the holding claw can be contracted when the locking cap is in threaded connection with the external thread; the lower extreme of interior pole is provided with the screwdriver head, and the lower extreme of interior pole penetrates and wears out from the outer tube lower extreme from locking mechanism's embracing claw, and the outer wall interval of interior pole is provided with multistage annular groove, and first regulation formula stop gear is spacing in one of them section annular groove. The utility model discloses can be to different grade type pedicle of vertebral arch screw nail, convenient operation.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up.
Background
The pedicle screw can be divided into a long-tail screw and a short-tail screw according to the length of the screw seat, and can be divided into a fixed screw and a universal screw according to whether the screw can be subjected to angle adjustment. Different pedicle screws need to use different nailing drivers in the nailing process, and the number of the related nailing tools is large.
In order to improve the universality of the screw driver, part of technicians develops a novel pedicle screw screwing tool. For example, chinese patent application CN109199566A discloses a pedicle screw driver, which comprises a sleeve, an inner rod, a locking device and a gear shifting device; the front end of the sleeve is provided with an external thread which is matched with the internal thread of the tail cap (namely the screw seat) of the pedicle screw; the inner rod is inserted into the sleeve, the front end of the inner rod is used for being inserted into a tail cap of the pedicle screw and matched with the pedicle screw, and the rear end of the inner rod is used for being connected with a handle; the rear end of the inner rod is provided with a section positioning section with a cross section being a regular 12-sided polygon, the positioning section is provided with at least one gear flange, the diameter of the gear flange is equal to that of the inner rod, and the diameter of a circumscribed circle of the positioning section is smaller than that of the inner rod; the locking device is used for locking the sleeve and the inner lever, and the gear shifting device is used for selecting the functions of the locking device.
The nailing tool has a plurality of defects in practical use, such as: (1) the insertion connection, the axial limit and the circumferential limit of the inner rod and the outer sleeve are realized through three different gears of the same locking device, steel balls are arranged at two ends of a spring for locking the gears, and the steel balls are clamped in different grooves for limiting, so that the nail feeding device needs to constantly pay attention to not touch a sliding block for adjusting the gears when in use, once the sliding block is easily switched to another mode, the sliding block is not easy to adjust, and is in an arrangement form that two ends of the sliding block protrude outwards, so that the sliding block is easy to touch, hidden dangers exist in the nail feeding process, and the steel balls and the grooves for limiting the steel balls are easily abraded when the nail feeding device is clinically used, so that the sliding block is not stably locked and easily slides, the damage rate of the locking device is high, and the locking device is frequently required to be replaced; (2) the inner rod is inserted with the nail head of the pedicle screw, the sleeve and the internal thread of the nail seat are screwed and connected, and then the outer sleeve needs to be assisted by a hand, the friction force between the outer sleeve and the palm and the fingers is large in the screwing process of the nail, the nailing efficiency is influenced, and the arm can feel uncomfortable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up, overcome the not enough of aforementioned prior art, the split type design of axial limit structure and circumference limit structure of interior pole and outer tube, structural design is more reasonable, the operation is more convenient, spacing back stability is high, the structure is not fragile, long service life, the outer wall of outer tube rotates the control cover that is provided with convenient to detach, hold the control cover at last nail in-process with the hand, twist interior pole and outer pole of twisting locking as an organic whole soon, form between control cover and the outer tube and rotate, can not produce the friction with palm and finger, nail efficiency greatly improves.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a pedicle of vertebral arch screw goes up nail bottle opener, includes outer tube, interior pole and locking mechanism, wherein:
the lower end of the outer sleeve is provided with a first thread section, the first thread section is matched with the internal thread of the screw seat of the pedicle screw, and the upper end of the outer sleeve is connected with the locking mechanism;
the locking mechanism comprises a connecting pipe, a connecting block and a holding claw which are sequentially connected, the connecting pipe is connected with the upper end of the outer sleeve, a first adjusting type limiting mechanism is arranged on the connecting block, the holding claws are arranged in an annular array, external threads are arranged at one end of each holding claw close to the connecting block, the locking mechanism further comprises a locking cap, the locking cap is arranged on each holding claw, and the holding claws can be retracted when the locking cap is in threaded connection with the external threads;
the lower end of the inner rod is provided with a screwdriver head which is matched with a spherical nail cap of the pedicle screw, the lower end of the inner rod penetrates into the holding claw of the locking mechanism and penetrates out of the lower end of the outer sleeve, a plurality of sections of annular grooves are arranged on the outer wall of the inner rod at intervals, and the first adjustable limiting mechanism is limited in one section of the annular groove;
the first adjusting limiting mechanism is used for limiting the axial relative displacement distance between the inner rod and the outer sleeve, the inner rod is adjusted to a proper position in the outer sleeve according to the length of the pedicle screw seat, so that the distance between the screwdriver head and the first thread section at the lower end of the outer sleeve is matched with the distance between the pedicle screw seat and the spherical screw cap, the inner rod and the outer sleeve are locked through the first adjusting limiting mechanism, the inner rod and the outer sleeve can only move a small distance along the circumferential direction, the inner rod can rotate in the circumferential direction in the connecting block at the moment, the screwdriver head of the inner rod is inserted into the spherical screw cap of the pedicle screw to limit the position of the screw body of the pedicle screw, the first thread section of the outer sleeve is screwed onto the internal thread of the pedicle screw seat, the inner rod and the outer sleeve are matched to keep the pedicle screw straight, the locking cap is connected with the external thread, and the holding claw is tightened, the inner rod and the outer sleeve are locked to prevent the inner rod and the outer sleeve from moving in a circumferentially staggered mode, and the inner rod and the outer sleeve are locked into a whole, so that the nailing process is stable and rapid.
Furthermore, a second thread section is arranged at the upper end of the outer sleeve and is in threaded connection with a connecting pipe of the locking mechanism.
Furthermore, the outside of the connecting pipe of the locking mechanism is provided with an anti-slip pipe, so that the operation is convenient.
Further, first regulation formula stop gear includes first button, first spring and first pin, be provided with first button mounting groove on the connecting block, the bottom of first button mounting groove is connected with the one end of first spring, and the other end and the first button of first spring are connected, have seted up first card hole on the first button and have been connected with the first rectangular hole that first button activity direction is unanimous, first pin passes first rectangular hole and fixes in first button mounting groove, and first button stretches out from first button mounting groove when first spring is in natural state, and the interior pole that first card hole will pass this moment first card hole locks on the connecting block, presses first button, can conveniently insert or take interior pole from locking mechanism and outer tube out.
Furthermore, the length of annular groove is greater than the degree of depth in first card hole for interior pole still can remove a distance when interior pole and outer tube are spacing to first regulation formula stop gear.
Furthermore, the inner wall of the holding claw is provided with first anti-skid lines. The outer wall of the inner rod is provided with a plurality of sections of second anti-slip lines matched with the first anti-slip lines, the number of the second anti-slip lines is the same as that of the annular grooves, the locking cap embraces the jaw to shrink when being connected with the external threads, the first anti-slip lines are clamped with the second anti-slip lines, and circumferential rotation between the inner rod and the outer sleeve is effectively prevented.
Furthermore, the pedicle screw screwing screwdriver also comprises a holding sleeve, the holding sleeve is sleeved on the outer wall of the outer sleeve, and the holding sleeve and the outer sleeve are connected through a second adjusting type limiting mechanism; the second adjusting limiting mechanism comprises a second button, a second spring and a second column pin, a second button mounting groove is formed in the holding sleeve, the bottom of the second button mounting groove is connected with one end of the second spring, the other end of the second spring is connected with the second button, a second clamping hole and a second long-strip-shaped hole which is consistent with the moving direction of the second button are formed in the second button, the second column pin penetrates through the second long-strip-shaped hole and is fixed in the second button mounting groove, the second button extends out of the second button mounting groove when the second spring is in a natural state, and at the moment, the outer sleeve penetrating through the second clamping hole is locked on the holding sleeve through the second clamping hole; the outer wall of the outer sleeve is provided with a circle of annular grooves matched with the second clamping holes;
the second is adjusted and is held the cover and can be carried out the rotation in a circumferential direction when stop gear locks the outer tube and holds the cover, under the circumstances of interior pole and outer tube circumferential locking, when handheld holding the cover and revolve to twist the outer tube, it rotates to hold between cover inner wall and the outer tube outer wall, it is motionless to hold between cover and palm and the finger, can not produce the friction with palm and finger, greatly improves and goes up nail efficiency.
The utility model has the advantages that: compared with the prior art, the utility model discloses a pedicle of vertebral arch screw is with multi-functional nail bottle opener has following advantage: (1) according to the length of the pedicle screw seat, the inner rod is adjusted to a proper position in the outer sleeve, so that the distance between the screwdriver head and the first thread section at the lower end of the outer sleeve is matched with the distance between the pedicle screw seat and the spherical screw cap, the inner rod and the outer sleeve are locked by the first adjusting limiting mechanism, so that the inner rod and the outer sleeve can only move a small distance along the circumferential direction, the inner rod can rotate in the connecting block in the circumferential direction, the screwdriver head of the inner rod is inserted into the spherical screw cap of the pedicle screw to limit the position of the pedicle screw body, the first thread section of the outer sleeve is screwed onto the internal thread of the pedicle screw seat, the inner rod and the outer sleeve are matched to keep the pedicle screw straight, the locking cap is connected with the external thread, the holding claw is tightened, the inner rod and the outer sleeve are locked, the inner rod and the outer sleeve cannot move in a circumferential dislocation manner, and the inner rod and the outer sleeve are locked into a whole, the nailing process is more stable and rapid; (2) the second is adjusted and is held the cover and can be carried out the rotation in a circumferential direction when stop gear locks the outer tube and holds the cover, under the circumstances of interior pole and outer tube circumferential locking, when handheld holding the cover and revolve to twist the outer tube, it rotates to hold between cover inner wall and the outer tube outer wall, it is motionless to hold between cover and palm and the finger, can not produce the friction with palm and finger, greatly improves and goes up nail efficiency.
Drawings
FIG. 1 is the main purpose of the overall structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural view of the outer tube of the present invention;
fig. 4 is a schematic structural view of the locking mechanism of the present invention;
fig. 5 is another angle structure diagram of the locking mechanism of the present invention;
fig. 6 is a schematic structural view of the inner rod of the present invention;
fig. 7 is a schematic structural view of the holding sleeve of the present invention;
the anti-skid device comprises an outer sleeve 1, a first thread section 101, a second thread section 102, an annular groove 103, a holding sleeve 2, a second button installation groove 201, an inner rod 3, a 301 screwdriver head, an annular groove 302, a second anti-skid thread 303, a locking mechanism 4, a connecting pipe 401, a connecting block 402, a claw 403, an external thread 404, a locking cap 405, an anti-skid pipe 406, a first button installation groove 407, a first anti-skid thread 408, a first adjustable limiting mechanism 5, a first button 501, a first spring 502, a first pin 503, a first clamping hole 504, a first strip hole 505, a second adjustable limiting mechanism 6, a second button 601, a second spring 602, a second pin 603, a second clamping hole 604 and a second strip hole 605.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the embodiment shown in fig. 1 to 7, a pedicle screw driver comprises an outer sleeve 1, an inner rod 3 and a locking mechanism 4, wherein:
the lower end of the outer sleeve 1 is provided with a first thread section 101, the first thread section 101 is matched with the internal thread of a screw seat of the pedicle screw, and the upper end of the outer sleeve 1 is connected with the locking mechanism 4;
the locking mechanism 4 comprises a connecting pipe 401, a connecting block 402 and a holding claw 403 which are sequentially connected, the connecting pipe 401 is connected with the upper end of the outer sleeve 1, a first adjusting type limiting mechanism 5 is arranged on the connecting block 402, the holding claws 403 are arranged in an annular array, an external thread 404 is arranged at one end of the holding claw 403 close to the connecting block 402, the locking mechanism 4 further comprises a locking cap 405, the locking cap 405 is arranged on the holding claw 403, and the holding claw 403 can be contracted when the locking cap 405 is in threaded connection with the external thread 404;
the lower end of the inner rod 3 is provided with a screwdriver head 301, the screwdriver head 301 is matched with a spherical nail cap of a pedicle screw, the lower end of the inner rod 3 penetrates into the holding claw 403 of the locking mechanism 4 and penetrates out of the lower end of the outer sleeve 1, a plurality of sections of annular grooves 302 are arranged on the outer wall of the inner rod 3 at intervals, and the first adjusting type limiting mechanism 5 is limited in one section of the annular groove 302;
the first adjusting limiting mechanism 5 is used for limiting the axial relative displacement distance between the inner rod 3 and the outer sleeve 1, the inner rod 3 is adjusted to a proper position in the outer sleeve 1 according to the length of the pedicle screw seat, so that the distance between the screwdriver head 301 and the first thread section 101 at the lower end of the outer sleeve 1 is matched with the distance between the pedicle screw seat and the spherical screw cap, the inner rod 3 and the outer sleeve 1 are locked through the first adjusting limiting mechanism 5, the inner rod 3 and the outer sleeve 1 can only move for a short distance along the circumferential direction, at the moment, the inner rod 3 can rotate in the circumferential direction in the connecting block 402, the screwdriver head 301 of the inner rod 3 is inserted into the spherical screw cap of the pedicle screw, the position of the screw body of the pedicle screw is limited, the first thread section 101 of the outer sleeve 1 is screwed onto the internal thread of the pedicle screw seat, the inner rod 3 is matched with the outer sleeve 1, so that the pedicle screw keeps straight, the locking cap 405 is connected with the external thread 404, the holding claw 403 is tightened, the inner rod 3 and the outer sleeve 1 are locked, circumferential dislocation movement cannot occur between the inner rod 3 and the outer sleeve 1, the inner rod 3 and the outer sleeve 1 are locked into a whole, and the nailing process is stable and rapid.
In this embodiment, the upper end of the outer sleeve 1 is provided with a second thread section 102, and the second thread section 102 is in threaded connection with a connecting pipe 401 of the locking mechanism 4.
In this embodiment, the anti-slip tube 406 is disposed outside the connection tube 401 of the locking mechanism 4, so as to facilitate operation.
In this embodiment, the first adjustable limiting mechanism 5 includes a first button 501, a first spring 502 and a first pin 503, the connecting block 402 is provided with a first button mounting groove 407, the bottom of the first button mounting groove 407 is connected with one end of the first spring 502, the other end of the first spring 502 is connected with the first button 501, the first button 501 is provided with a first clamping hole 504 and a first long hole 505 in the same direction as the moving direction of the first button 501, the first pin 503 passes through the first long hole 505 and is fixed in the first button mounting groove 406, when the first spring 502 is in a natural state, the first button 501 extends out of the first button mounting groove 407, at this time, the first clamping hole 504 locks the inner rod 3 passing through the first clamping hole 504 on the connecting block 402, and the first button 501 is pressed, so that the inner rod 3 can be conveniently inserted into or pulled out of the locking mechanisms 4 and the outer sleeve 1.
In this embodiment, the length of the annular groove 302 is greater than the depth of the first locking hole 504, so that the inner rod 3 can still move a certain distance when the first adjustable limiting mechanism 5 limits the inner rod 3 and the outer sleeve 1.
In this embodiment, the inner wall of the holding claw 403 is provided with a first anti-slip pattern 408. The outer wall of the inner rod 3 is provided with multiple sections of second anti-slip threads 303 matched with the first anti-slip threads 408, the number of the second anti-slip threads 303 is the same as that of the annular grooves 302, the holding claw 403 contracts when the locking cap 405 is connected with the external threads 404, the first anti-slip threads 408 are clamped with the second anti-slip threads 303, and circumferential rotation between the inner rod 3 and the outer sleeve 1 is effectively prevented.
In the embodiment, the pedicle screw driving screwdriver further comprises a holding sleeve 2, the holding sleeve 2 is sleeved on the outer wall of the outer sleeve 1, and the holding sleeve 2 is connected with the outer sleeve 1 through a second adjustable limiting mechanism 6; the second adjustable limiting mechanism 6 comprises a second button 601, a second spring 602 and a second column pin 603, a second button mounting groove 601 is formed in the holding sleeve 2, the bottom of the second button mounting groove 601 is connected with one end of the second spring 602, the other end of the second spring 602 is connected with the second button 601, a second clamping hole 604 and a second long hole 605 which is consistent with the moving direction of the second button 601 are formed in the second button 601, the second column pin 603 penetrates through the second long hole 605 to be fixed in the second button mounting groove 601, the second button 601 extends out of the second button mounting groove 201 when the second spring 602 is in a natural state, and at the moment, the second clamping hole 604 locks the outer sleeve 1 which penetrates through the second clamping hole 604 on the holding sleeve 2; the outer wall of the outer sleeve 1 is provided with a circle of annular grooves 103 matched with the second clamping holes 604;
the second is adjusted 6 and is locked outer tube 1 and is held when covering 2 to hold and hold the cover 2 and can carry out the circumference and rotate, under the circumstances of interior pole 3 and the locking of outer tube 1 circumference, when handheld holding cover 2 revolves to twist outer tube 1, it rotates to hold between 2 inner walls of cover and the outer tube 1 outer wall, it is motionless to hold between cover 2 and palm and the finger, can not produce the friction with palm and finger, greatly improves and goes up to bind efficiency.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a pedicle of vertebral arch screw goes up nail bottle opener which characterized in that: including outer tube, interior pole and locking mechanism, wherein:
the lower end of the outer sleeve is provided with a first thread section, the first thread section is matched with the internal thread of the screw seat of the pedicle screw, and the upper end of the outer sleeve is connected with the locking mechanism;
the locking mechanism comprises a connecting pipe, a connecting block and a holding claw which are sequentially connected, the connecting pipe is connected with the upper end of the outer sleeve, a first adjusting type limiting mechanism is arranged on the connecting block, an external thread is arranged at one end, close to the connecting block, of the holding claw, the locking mechanism further comprises a locking cap, the locking cap is arranged on the holding claw, and the holding claw can be retracted when the locking cap is in threaded connection with the external thread;
the lower extreme of interior pole is provided with the screwdriver head, and the screwdriver head cooperatees with the spherical head of a nail of pedicle of vertebral arch screw, and the lower extreme of interior pole penetrates and wears out from the outer tube lower extreme from locking mechanism's embracing claw, and the outer wall interval of interior pole is provided with multistage annular groove, and first regulation formula stop gear is spacing in one of them section annular groove.
2. A pedicle screw driver as claimed in claim 1, wherein: and a second thread section is arranged at the upper end of the outer sleeve and is in threaded connection with a connecting pipe of the locking mechanism.
3. A pedicle screw driver as claimed in claim 1, wherein: and an anti-slip pipe is arranged outside the connecting pipe of the locking mechanism.
4. A pedicle screw driver as claimed in claim 1, wherein: first regulation formula stop gear includes first button, first spring and first pin, be provided with first button mounting groove on the connecting block, the bottom of first button mounting groove is connected with the one end of first spring, and the other end and the first button of first spring are connected, have seted up first card hole on the first button and have pushed the first rectangular hole that the direction is unanimous with first button activity direction, first pin passes first rectangular hole and fixes in first button mounting groove, and first button stretches out from first button mounting groove when first spring is in under the natural state, and the interior pole that first card hole will pass this moment is locked on the connecting block.
5. A pedicle screw driver as claimed in claim 4, wherein: the length of the annular groove is larger than the depth of the first clamping hole.
6. A pedicle screw driver as claimed in claim 1, wherein: the inner wall of the holding claw is provided with first anti-skidding lines.
7. A pedicle screw driver as claimed in claim 1, wherein: the outer wall of the inner rod is provided with a plurality of sections of second anti-slip threads matched with the first anti-slip threads, and the number of the second anti-slip threads is the same as that of the annular grooves.
8. A pedicle screw driver as claimed in claim 1, wherein: the outer sleeve is sleeved with the holding sleeve, and the holding sleeve and the outer sleeve are connected through a second adjusting type limiting mechanism.
9. A pedicle screw driver as claimed in claim 8, wherein: the second adjusting type limiting mechanism comprises a second button, a second spring and a second column pin, a second button mounting groove is formed in the holding sleeve, the bottom of the second button mounting groove is connected with one end of the second spring, the other end of the second spring is connected with the second button, a second clamping hole and a second strip hole which is identical to the second button in moving direction are formed in the second button, the second column pin penetrates through the second strip hole to be fixed in the second button mounting groove, the second button stretches out from the second button mounting groove when the second spring is in a natural state, and the outer sleeve which penetrates through the second clamping hole is locked on the holding sleeve through the second clamping hole.
10. A pedicle screw driver as claimed in claim 9, wherein: and the outer wall of the outer sleeve is provided with a ring of annular grooves matched with the second clamping holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221202723.6U CN217430151U (en) | 2022-05-19 | 2022-05-19 | Pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221202723.6U CN217430151U (en) | 2022-05-19 | 2022-05-19 | Pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217430151U true CN217430151U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221202723.6U Active CN217430151U (en) | 2022-05-19 | 2022-05-19 | Pedicle of vertebral arch screw is with multi-functional nail bottle opener of going up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217430151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117752432A (en) * | 2024-02-22 | 2024-03-26 | 中国人民解放军总医院第一医学中心 | Fixed external member device in ventriculoscope operation |
-
2022
- 2022-05-19 CN CN202221202723.6U patent/CN217430151U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117752432A (en) * | 2024-02-22 | 2024-03-26 | 中国人民解放军总医院第一医学中心 | Fixed external member device in ventriculoscope operation |
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