CN111904588A - Low-position lumbosacral vertebrae anterior angulation nail setting instrument - Google Patents
Low-position lumbosacral vertebrae anterior angulation nail setting instrument Download PDFInfo
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- CN111904588A CN111904588A CN202010654927.2A CN202010654927A CN111904588A CN 111904588 A CN111904588 A CN 111904588A CN 202010654927 A CN202010654927 A CN 202010654927A CN 111904588 A CN111904588 A CN 111904588A
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
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Abstract
The invention provides a low-position lumbosacral anterior approach angulation nail setting instrument, relates to the technical field of medical instruments, and solves the problem that the angulation angle of a screwdriver and a screw cannot be changed at any time in the prior art, wherein the low-position lumbosacral anterior approach angulation nail setting instrument comprises an angulation screwdriver, an angulation screwdriver sleeve and a connecting handle which are coaxially arranged; the angled screwdriver comprises a screwdriver head, a universal joint and an angled screwdriver rod which are sequentially connected, and the connecting handle is fixedly connected with the angled screwdriver rod; an included angle is formed between the axis of an inclined hole in the angled screwdriver sleeve and the axis of the guide hole, the angled screwdriver is movably inserted into the guide hole and the inclined hole, the screwdriver head extends out of the angled screwdriver sleeve, and the inclined hole is used for guiding the screwdriver head to form an angle with the angled screwdriver rod; the rear end of the angled screwdriver sleeve is movably connected with the front end of the connecting handle, and the connecting handle can axially reciprocate to enable the screwdriver head and the angled screwdriver rod to be switched between a coaxial state and an angled state, so that the instrument can adjust the angled angle of the screw at any time in an operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a low-position lumbosacral vertebrae anterior angulation nail setting instrument.
Background
The lower lumbosacral segment of the spine is one of the good parts of the spine surgical diseases, and the normal sequence and stability of the spine can be lost due to the pathological changes of lumbosacral segment degeneration, fracture, deformity, tuberculosis, tumor and the like, and the spine is usually reconstructed by an operation. The lumbosacral anterior approach operation (ALIF) is a common operation mode of spinal surgery, and due to the complex anatomical adjacency of the lumbosacral section of the spine, particularly the abdominal cavity great vessels passing through and the abdominal cavity viscera distribution in the front, the safety space reserved for operation is limited, and the like, the development of the low-position lumbosacral anterior approach fixation operation is limited to a great extent in the early stage. With the continuous improvement of the spinal surgical technique and internal fixation instrument, the anterior approach has been widely used clinically, and has been proved to have good effects on reconstructing the spinal structure and stability.
In the low-position lumbosacral vertebrae anterior operation, due to the influence of the ilium, the normal operation of the operation can be affected, and the difficulty of drilling screw holes and placing nails is often faced. Fig. 8 is a schematic view of the operation of the existing screw-placing instrument for the low-position lumbosacral vertebrae anterior screw-placing, the existing screw-placing instrument is not designed with the function of angulation in different directions up and down of the screwdriver, so that the screw cannot change direction after the screwdriver rod and the sleeve are fixed when the screw is placed, and it can be seen from the figure that the screw is not in the optimal position, if the screw angle is adjusted, only the distal end position of the screwdriver rod can be changed, but the ilium is blocked and cannot stand up the screwdriver rod, and the screw cannot be placed in the middle position of the vertebral body. The spine surgery has high requirement on the internal fixing position, so that how to quickly and accurately achieve the optimal screw angle and depth and achieve the effect of strong fixation can reduce the complications of loosening, fracture, displacement and the like caused by inaccurate internal fixation implantation, and is a problem faced by spine surgeons so far. However, there is currently no surgical instrument that provides an effective aid to this. Therefore, it is necessary to design a set of angled nail placing instrument which is easy to operate and has strong practicability.
Disclosure of Invention
The invention aims to design a low-position lumbosacral anterior approach angulation nail setting instrument, which can screw a screw into a vertebra under the condition that a screwdriver and the screw are not coaxial, can adjust the angulation angle of the screw at any time in the operation, is convenient for the low-position lumbosacral operation, can standardize the low-position lumbosacral nail setting technology, reduces related complications of screw setting such as internal fixation loosening and falling, and reduces the operation difficulty of doctors and the risks of patients.
The invention is realized by the following technical scheme:
the low lumbosacral vertebrae anterior angulation nail setting instrument comprises an angulation screwdriver, an angulation screwdriver sleeve and a connecting handle which are coaxially arranged;
the angled screwdriver comprises a screwdriver head, a universal joint and an angled screwdriver rod; one connector of the universal joint is coaxially and fixedly connected with the screwdriver head, and the other connector of the universal joint is coaxially and fixedly connected with the angled screwdriver rod;
the connecting handle is fixedly connected with the angled screwdriver rod;
the angled screwdriver sleeve is internally provided with a guide hole and an inclined hole which are communicated with each other, an included angle is formed between the axis of the inclined hole and the axis of the guide hole, the inclined hole forms an outlet at the head end of the angled screwdriver sleeve, the angled screwdriver is movably inserted into the guide hole and the inclined hole, the screwdriver head extends out of the outlet, and the inclined hole is used for guiding the screwdriver head so as to enable the screwdriver head to be angled with the angled screwdriver rod; the rear end of the angled screwdriver sleeve is movably connected with the front end of the connecting handle, and the connecting handle can axially reciprocate to enable the screwdriver head and the angled screwdriver rod to be in a coaxial state and an angled state.
When the arrangement structure is adopted, the connecting handle can be pulled back and forth to synchronously adjust the angulation screwdriver, so that the screwdriver head can move back and forth in the guide hole and the inclined hole, and the angulation angle between the screwdriver head and the angulation screwdriver rod can be adjusted through different positions of the screwdriver head in the guide hole. The structure can flexibly adjust the angle of the screw in the low lumbosacral vertebra operation, can standardize the low lumbosacral vertebra screw placing technology, can quickly and accurately place the low lumbosacral vertebra screw under the conditions of accuracy, high operability and material saving, shortens the operation time, reduces the related complications of screw placing such as internal fixation loosening, falling and the like caused by inaccurate screw placing, and can effectively reduce the operation difficulty of doctors and the risk of patients.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the connecting handle comprises a connecting handle shaft and a locking nut movably sleeved on the front section of the connecting handle shaft, the front section of an inner hole of the locking nut is a threaded hole, the rear section of the inner hole of the locking nut is a unthreaded hole, and the aperture of the unthreaded hole is larger than that of the threaded hole; the front section of the connecting handle shaft can move in the light hole along the axial direction;
the rear section of the angled screwdriver sleeve is inserted into the front section of the inner hole of the locking nut and is fixedly connected through threads.
When the structure is adopted, the locking nut is sleeved at the front section of the connecting handle shaft, the external thread is arranged at the rear section of the angled screwdriver sleeve, and the angled screwdriver sleeve and the connecting handle shaft can be quickly butted, screwed and fixed when being connected.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the connection handle further comprises an end cap; a threaded shaft is arranged at the rear end of the angled screwdriver rod, the diameter of the threaded shaft is smaller than that of the angled screwdriver rod, and a stepped hole which penetrates through the connecting handle shaft in the axial direction is formed in the connecting handle shaft; the rear section of the angled screwdriver rod is movably inserted into the stepped hole, a shaft shoulder formed by the angled screwdriver rod and the threaded shaft is abutted to the stepped surface of the stepped hole, the threaded shaft penetrates out of the rear section of the connecting handle shaft and is in threaded connection with the end cap, and the front end of the end cap is abutted to the rear end of the connecting handle shaft.
When adopting above-mentioned setting structure, the angulation screwdriver pole inserts and connects the handle in-shaft can accomplish quick location through the cooperation with the shoulder hole, and then can be fast with end cap and screw thread axle spiro union, and it is fixed to make angulation screwdriver pole accomplish the front and back location, realizes angulation screwdriver and the quick assembly disassembly of connecting the handle.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the connecting handle further comprises a first rubber sleeve, and the first rubber sleeve is sleeved on the connecting handle shaft.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the included angle formed between the axis of the inclined hole and the axis of the guide hole is larger than 90 degrees and smaller than 180 degrees.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the head shape of the screwdriver head is hexagonal, star-shaped or cross-shaped.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the low lumbosacral anterior angulation stapling instrument further comprises a sleeve handle connected to an outer wall of the angulation screwdriver sleeve, the sleeve handle perpendicular to the angulation screwdriver sleeve.
When the arrangement structure is adopted, the sleeve handle can be conveniently held and controlled to form the angle nail setting device in the front path of the low-position lumbosacral vertebra, and actions such as propulsion, direction adjustment and the like can be more conveniently completed.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the sleeve handle comprises a sleeve handle shaft, a shaft sleeve, a jacket and a locking hand wheel;
the shaft sleeve is fixedly connected with one end of the sleeve handle shaft, and the shaft sleeve is movably sleeved on the angled screwdriver sleeve;
the jacket comprises a bottom plate and a wing plate vertically and fixedly connected to the bottom plate, the bottom plate is movably sleeved on the sleeve handle shaft, the jacket can move along the axial direction of the sleeve handle shaft, the wing plate is positioned on one side of the shaft sleeve in the axial direction, and the wing plate is movably sleeved on the angled screwdriver sleeve;
the sleeve handle shaft is in threaded connection with the locking hand wheel, the locking hand wheel can move along the axial direction of the sleeve handle shaft, and the locking hand wheel can abut against the bottom plate to enable the clamping sleeve to be matched with the shaft sleeve to clamp the angled screwdriver sleeve.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the clamping sleeve is a U-shaped seat provided with two wing plates, and the two wing plates are respectively positioned on two sides of the shaft sleeve in the axial direction.
When the structure is adopted, the clamping sleeves of the two wing plates can provide a more stable clamping effect.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the sleeve handle further comprises a second rubber sleeve, and the second rubber sleeve is sleeved on the sleeve handle shaft.
The invention has the following advantages and beneficial effects:
according to the invention, the connecting handle can be pulled and moved back and forth to synchronously adjust the angled screwdriver, so that the screwdriver head can move back and forth in the guide hole and the inclined hole, and the angled angle between the screwdriver head and the angled screwdriver rod can be adjusted through different positions of the screwdriver head in the guide hole. The structure can flexibly adjust the angle of the screw in the low lumbosacral vertebra operation, can standardize the low lumbosacral vertebra screw placing technology, can quickly and accurately place the low lumbosacral vertebra screw under the conditions of accuracy, high operability and material saving, shortens the operation time, reduces the related complications of screw placing such as internal fixation loosening, falling and the like caused by inaccurate screw placing, and can effectively reduce the operation difficulty of doctors and the risk of patients.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the general assembly of a low lumbosacral anterior angulation stapling instrument;
FIG. 2 is an exploded view of the low lumbosacral anterior angulation stapling instrument;
FIG. 3 is an exploded view of the low lumbosacral anterior angulation stapling instrument;
FIG. 4 is a schematic view, in half section, of an anterior position of the low lumbosacral anterior approach angled stapling instrument;
FIG. 5 is a schematic view, in half section, of a posterior position of the low lumbosacral anterior angulation stapling instrument;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a diagrammatic view of a surgical procedure of the low lumbosacral vertebrae anterior angulation stapling instrument with respect to the low lumbosacral vertebrae;
FIG. 8 is a schematic view of a prior art staple placement instrument operating in a low lumbosacral anterior approach to staple placement;
labeled as:
1. an angled screwdriver; 11. a screwdriver bit; 12. a universal joint; 13. an angled screwdriver rod;
2. an angled screwdriver sleeve; 21. a guide hole; 22. an inclined hole; 23. a clamping end; 24. a yield window;
3. a connecting handle; 31. a connecting handle shaft; 32. locking the nut; 33. an end cap; 34. a first rubber sleeve;
4. a sleeve handle; 41. a sleeve handle shaft; 42. a shaft sleeve; 43. a jacket; 44. locking a hand wheel; 45. and a second rubber sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the low lumbosacral vertebrae anterior angulation nail setting instrument can screw a screw into a vertebra under the condition that a screwdriver and the screw are not coaxial, the angulation angle of the screw can be adjusted at any time in the operation, the low lumbosacral vertebrae operation is convenient, the low lumbosacral vertebrae nail setting technology can be standardized, related complications caused by screw setting such as internal fixation loosening and falling are reduced, and the operation difficulty of a doctor and the risk of a patient are reduced, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the low lumbosacral vertebrae anterior angulation nail setting instrument is particularly arranged into the following structure:
the low lumbosacral vertebrae anterior angulation stapling instrument comprises an angulation screwdriver 1, an angulation screwdriver sleeve 2 and a connecting handle 3, wherein the angulation screwdriver 1, the angulation screwdriver sleeve 2 and the connecting handle 3 are coaxially arranged.
The angled screwdriver 1 includes a screwdriver bit 11, a universal joint 12, and an angled screwdriver shaft 13. The screwdriver bit 11 comprises a dome and a screwdriver head connected to the top end of the dome, the head shape of the screwdriver bit 11 can be designed to be hexagonal, star-shaped, cross-shaped or the like, and an angled screwdriver with a specific head shape can be specifically selected according to a screw signal before operation. The universal joint 12 has two connection heads and a connection core, one connection head of the universal joint 12 is arranged coaxially with the screwdriver bit 11 and welded to the rear end of the dome, and the other connection head of the universal joint 12 is arranged coaxially with the angled screwdriver rod 13 and welded to the front end of the angled screwdriver rod 13.
The connecting handle 3 comprises a connecting handle shaft 31, a locking nut 32 movably sleeved on the front section of the connecting handle shaft 31 and a first rubber sleeve 34, and the first rubber sleeve 34 is sleeved on the connecting handle shaft 31 to improve the holding hand feeling. The front end of the connecting handle shaft 31 is provided with a retainer ring which is used for limiting the locking nut 32 and preventing the locking nut from falling off. The hole of lock nut 32 divide into anterior segment and back end, and the anterior segment sets up to the screw hole, and the back end sets up to the unthreaded hole, and the aperture of unthreaded hole is greater than the aperture of screw hole, and the retaining ring of the anterior segment of connecting handle axle 31 can be along axial displacement in the unthreaded hole. The rear section of the angled screwdriver sleeve 2 is provided with external threads matched with the threaded hole of the locking nut 32, the rear section of the angled screwdriver sleeve 2 is inserted into the threaded hole of the front section of the inner hole of the locking nut 32 and is in threaded connection and fixation with the threaded hole, after fixation, the rear end of the angled screwdriver sleeve 2 and the rear end of the locking nut 32 form front and rear limiting on the connecting handle shaft 31, so that the connecting handle shaft 31 can move back and forth in a space provided by the unthreaded hole, and the distance from the front end of the connecting handle shaft 31 to the rear end of the angled screwdriver sleeve 2 can be changed by the connecting handle shaft 31 moving back and forth. A locking nut 32 is sleeved on the front section of the connecting handle shaft 31, and an external thread is arranged on the rear section of the angled screwdriver sleeve 2, so that the angled screwdriver sleeve 2 and the connecting handle shaft 31 can be quickly butted, screwed and fixed when being connected.
A through hole is formed in the angled screwdriver sleeve 2, the through hole is a guide hole 21 and an inclined hole 22 which are communicated with each other, the guide hole 21 forms an inlet at the rear end of the angled screwdriver sleeve 2, the inclined hole 22 forms an outlet at the head end of the angled screwdriver sleeve 2, an included angle is formed between the axis of the inclined hole 22 and the axis of the guide hole 21, the included angle can be set between 90 degrees and 180 degrees, the inclined hole 22 is used for guiding the screwdriver bit 11 to enable the screwdriver bit 11 to be angled with the angled screwdriver rod 13, an arc surface for facilitating guiding of the screwdriver bit 11 is designed in the inclined hole 22 according to the design mode of the prior art, and the dome of the screwdriver bit 11 is matched with the arc surface. The angled screwdriver 1 is movably inserted into the guide hole 21 and the inclined hole 22, the front section of the angled screwdriver rod 13 is provided with a guide shaft section which is directly matched with the guide hole 21 in a sliding manner, and the diameter of the guide shaft section is larger than the rest section of the angled screwdriver rod 13. The screwdriver bit 11 extends out of the outlet, the connecting handle 3 can move axially and reciprocally to enable the screwdriver bit 11 and the angulation screwdriver rod 13 to be switched between a coaxial state and an angulation state, fig. 4 shows a front state of the low-position lumbosacral vertebrae front angulation nail setting device, at this moment, the screwdriver bit 11 and the angulation screwdriver rod 13 are in a coaxial state, fig. 5 shows a rear state of the low-position lumbosacral vertebrae front angulation nail setting device, at this moment, the screwdriver bit 11 and the angulation screwdriver rod 13 are in an angulation state.
Wherein at the outlet of the head end of the angled screwdriver sleeve 2 there is a relief window 24, the relief window 24 serving to enable the screwdriver bit 11 to pass through the relief window 24 coaxially with the angled screwdriver shank 13. The distance between the uppermost edge of the inner wall surface of the abdicating window 24 and the axis of the angled screwdriver shank 13 is equal to the radius of the screwdriver bit 11.
In this embodiment, the connection handle 3 and the angled screwdriver 1 are preferably provided in a detachable connection configuration. Specifically, the connection handle 3 further comprises an end cap 33, and the end cap 33 is provided with a blind hole with internal threads. The rear end of the angled screwdriver shaft 13 is provided with a threaded shaft for screwing with the blind hole of the end cap 33, the diameter of which is smaller than the diameter of the angled screwdriver shaft 13 so that the rear end of the angled screwdriver shaft 13 forms a shoulder with the threaded shaft. The connecting handle shaft 31 is provided with a stepped hole which axially penetrates through, the rear section of the angled screwdriver rod 13 is movably inserted into the stepped hole, a shaft shoulder formed by the angled screwdriver rod 13 and the threaded shaft abuts against the stepped surface of the stepped hole, the threaded shaft penetrates out of the rear section of the connecting handle shaft 31, the extending section of the threaded shaft is in threaded connection with the end cap 33, and after the threaded connection, the front end of the end cap 33 tightly abuts against the rear end of the connecting handle shaft 31. The angled screwdriver rod 13 can be quickly positioned by being matched with the stepped hole when being inserted into the connecting handle shaft 31, and then the end cap 33 can be quickly screwed with the threaded shaft, so that the angled screwdriver rod 13 can be positioned and fixed front and back, and the angled screwdriver 1 and the connecting handle 3 can be quickly disassembled and assembled.
With the above arrangement, the angled screwdriver 1 can be synchronously adjusted by pulling and moving the connecting handle 3 back and forth, so that the screwdriver bit 11 can move back and forth in the guide hole 21 and the inclined hole 22, and the angle between the screwdriver bit 11 and the angled screwdriver rod 13 can be adjusted by different positions of the screwdriver bit 11 in the guide hole 21. The structure can flexibly adjust the angle of the screw in the low lumbosacral vertebra operation, can standardize the low lumbosacral vertebra screw placing technology, can quickly and accurately place the low lumbosacral vertebra screw under the conditions of accuracy, high operability and material saving, shortens the operation time, reduces the related complications of screw placing such as internal fixation loosening, falling and the like caused by inaccurate screw placing, and can effectively reduce the operation difficulty of doctors and the risk of patients.
Example 2:
the embodiment is further optimized on the basis of the above embodiment, and in order to further better implement the invention, the following arrangement structure is particularly adopted:
the low lumbosacral vertebrae anterior approach angular stapling instrument further comprises a sleeve handle 4, wherein the sleeve handle 4 comprises a sleeve handle shaft 41, a shaft sleeve 42, a clamping sleeve 43, a locking hand wheel 44 and a second rubber sleeve 45. The second rubber sleeve 45 is sleeved on the sleeve handle shaft 41.
A sleeve 42 is fixedly connected to the top end of the sleeve handle shaft 41, the sleeve 42 has a through hole, the sleeve 42 is sleeved on the angled screwdriver sleeve 2 through the through hole, and the sleeve 42 can rotate around the axis of the angled screwdriver sleeve 2 and move along the axial direction.
The clamping sleeve 43 comprises a bottom plate and two wing plates which are vertically and fixedly connected to the bottom plate, the two wing plates are respectively welded on two opposite sides of the bottom plate, and the clamping sleeve 43 of the two wing plates can provide a more stable clamping effect.
The bottom plate has a through hole, the bottom plate is sleeved on the sleeve handle shaft 41 through the through hole, the clamping sleeve 43 can move along the axial direction of the sleeve handle shaft 41, the wing plates have through holes, the through holes of the two wing plates are coaxial, and the through holes of the wing plates can be coaxial with the through hole of the shaft sleeve 42 and can be not coaxial. The two wing plates are respectively positioned at two axial sides of the shaft sleeve 42, and the wing plates and the shaft sleeve 42 are movably sleeved at the position of the angled screwdriver sleeve 2.
The sleeve handle shaft 41 is provided with external threads, the external thread section is in threaded connection with the locking hand wheel 44, the locking hand wheel 44 can be rotated to move along the axial direction of the sleeve handle shaft 41, the locking hand wheel 44 can be abutted against the bottom plate of the clamping sleeve 43 after moving upwards, the clamping sleeve 43 slightly moves upwards, the clamping sleeve 43 and the shaft sleeve 42 are in staggered fit, the through hole of the wing plate and the through hole of the shaft sleeve 42 are not coaxial, so that the clamping space is reduced, the sleeve handle 4 is clamped on the outer wall of the angled screwdriver sleeve 2, and the sleeve handle 4 is perpendicular to the angled screwdriver sleeve 2.
The sleeve handle 4 can be conveniently held and controlled by the low-position lumbosacral vertebrae anterior angulation nail setting device, and can more conveniently complete actions such as propulsion, direction adjustment and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. Low position lumbosacral vertebrae anterior approach angulation nail setting apparatus which characterized in that: comprises an angled screwdriver (1), an angled screwdriver sleeve (2) and a connecting handle (3) which are coaxially arranged;
the angled screwdriver (1) comprises a screwdriver head (11), a universal joint (12) and an angled screwdriver rod (13); one connector of the universal joint (12) is coaxially and fixedly connected with the screwdriver head (11), and the other connector of the universal joint (12) is coaxially and fixedly connected with the angled screwdriver rod (13);
the connecting handle (3) is fixedly connected with the angled screwdriver rod (13);
a guide hole (21) and an inclined hole (22) which are communicated with each other are formed in the angled screwdriver sleeve (2), an included angle is formed between the axis of the inclined hole (22) and the axis of the guide hole (21), an outlet is formed at the head end of the angled screwdriver sleeve (2) by the inclined hole (22), the angled screwdriver (1) is movably inserted into the guide hole (21) and the inclined hole (22), the screwdriver bit (11) extends out of the outlet, and the inclined hole (22) is used for guiding the screwdriver bit (11) to enable the screwdriver bit (11) to be angled with the angled screwdriver rod (13); the rear end of the angled screwdriver sleeve (2) is movably connected with the front end of the connecting handle (3), and the connecting handle (3) can axially reciprocate to enable the screwdriver head (11) and the angled screwdriver rod (13) to be in coaxial state and angled state conversion.
2. The low lumbosacral anterior approach angular stapling instrument of claim 1, wherein: the connecting handle (3) comprises a connecting handle shaft (31) and a locking nut (32) movably sleeved on the front section of the connecting handle shaft (31), the front section of an inner hole of the locking nut (32) is provided with a threaded hole, the rear section of the inner hole is provided with a unthreaded hole, and the aperture of the unthreaded hole is larger than that of the threaded hole; the front section of the connecting handle shaft (31) can move axially in the light hole;
the rear section of the angled screwdriver sleeve (2) is inserted into the front section of the inner hole of the locking nut (32) and is fixedly connected through threads.
3. The low lumbosacral anterior approach angular stapling instrument of claim 2, wherein: the connection handle (3) further comprises an end cap (33); a threaded shaft is arranged at the rear end of the angled screwdriver rod (13), the diameter of the threaded shaft is smaller than that of the angled screwdriver rod (13), and a stepped hole which penetrates through the connecting handle shaft (31) in the axial direction is formed; the rear section of the angled screwdriver rod (13) is movably inserted into the stepped hole, a shaft shoulder formed by the angled screwdriver rod (13) and the threaded shaft abuts against a stepped surface of the stepped hole, the threaded shaft penetrates out of the rear section of the connecting handle shaft (31) and is in threaded connection with the end cap (33), and the front end of the end cap (33) abuts against the rear end of the connecting handle shaft (31).
4. The low lumbosacral anterior approach angular stapling instrument of claim 2, wherein: the connecting handle (3) further comprises a first rubber sleeve (34), and the connecting handle shaft (31) is sleeved with the first rubber sleeve (34).
5. The low lumbosacral anterior approach angular stapling instrument of claim 1, wherein: the included angle formed between the axis of the inclined hole (22) and the axis of the guide hole (21) is larger than 90 degrees and smaller than 180 degrees.
6. The low lumbosacral anterior approach angular stapling instrument of claim 1, wherein: the head shape of the screwdriver head (11) is hexagonal, star-shaped or cross-shaped.
7. The low lumbosacral anterior approach angular stapling instrument of any one of claims 1-6, wherein: further comprising a sleeve handle (4), the sleeve handle (4) being connected to an outer wall of the angled screwdriver sleeve (2), the sleeve handle (4) being perpendicular to the angled screwdriver sleeve (2).
8. The low lumbosacral anterior approach angular stapling instrument of claim 7, wherein: the sleeve handle (4) comprises a sleeve handle shaft (41), a shaft sleeve (42), a clamping sleeve (43) and a locking hand wheel (44);
the shaft sleeve (42) is fixedly connected with one end of the sleeve handle shaft (41), and the shaft sleeve (42) is movably sleeved on the angled screwdriver sleeve (2);
the clamping sleeve (43) comprises a bottom plate and a wing plate vertically and fixedly connected to the bottom plate, the bottom plate is movably sleeved on the sleeve handle shaft (41), the clamping sleeve (43) can move along the axial direction of the sleeve handle shaft (41), the wing plate is positioned on one side of the shaft sleeve (42) in the axial direction, and the wing plate is movably sleeved on the angled screwdriver sleeve (2);
the sleeve handle shaft (41) is in threaded connection with the locking hand wheel (44), the locking hand wheel (44) can move along the axial direction of the sleeve handle shaft (41), and the locking hand wheel (44) can abut against the bottom plate to enable the clamping sleeve (43) and the shaft sleeve (42) to be matched and clamped with the angled screwdriver sleeve (2).
9. The low lumbosacral anterior approach angular stapling instrument of claim 8, wherein: the clamping sleeve (43) is a U-shaped seat provided with two wing plates, and the two wing plates are respectively positioned on two sides of the shaft sleeve (42) in the axial direction.
10. The low lumbosacral anterior approach angular stapling instrument of claim 8, wherein: the sleeve handle (4) further comprises a second rubber sleeve (45), and the sleeve handle shaft (41) is sleeved with the second rubber sleeve (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654927.2A CN111904588A (en) | 2020-07-09 | 2020-07-09 | Low-position lumbosacral vertebrae anterior angulation nail setting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654927.2A CN111904588A (en) | 2020-07-09 | 2020-07-09 | Low-position lumbosacral vertebrae anterior angulation nail setting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111904588A true CN111904588A (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440256A (en) * | 2021-06-28 | 2021-09-28 | 哈尔滨工业大学 | Ultrasonic osteotome clamping device of spinal surgery robot |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440256A (en) * | 2021-06-28 | 2021-09-28 | 哈尔滨工业大学 | Ultrasonic osteotome clamping device of spinal surgery robot |
| CN113440256B (en) * | 2021-06-28 | 2023-03-24 | 哈尔滨工业大学 | Ultrasonic osteotome clamping device of spinal surgery robot |
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