CN112353478A - Locking steel plate screw minimally invasive imbedding guide sleeve - Google Patents
Locking steel plate screw minimally invasive imbedding guide sleeve Download PDFInfo
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- CN112353478A CN112353478A CN202011232532.XA CN202011232532A CN112353478A CN 112353478 A CN112353478 A CN 112353478A CN 202011232532 A CN202011232532 A CN 202011232532A CN 112353478 A CN112353478 A CN 112353478A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
- A61B17/8877—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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Abstract
The invention relates to the technical field of medical instruments, in particular to a minimally invasive embedding guide sleeve for locking steel plate screws, which comprises a sleeve body formed by splicing a left half cylinder body and a right half cylinder body in a separable mode, wherein the lower end of the sleeve body can be in threaded connection with a locking hole of a locking steel plate, a vertically through nail placing guide channel is formed in the sleeve body, the nail placing guide channel comprises an upper guide channel through which the head of a screw can pass and a lower guide channel through which the screw rod part of the screw can pass, and the upper guide channel and the lower guide channel are sequentially arranged from top to bottom and are communicated with each other. The invention has reasonable and compact structure and convenient use, the lower end of the sleeve body is in threaded connection with the locking hole of the locking steel plate, and the lower end of the sleeve only needs to be screwed out of the locking hole of the locking steel plate and then the left half cylinder body and the right half cylinder body are separated during disassembly, so that the whole assembly and disassembly process is quick, convenient, time-saving and labor-saving, thereby reducing the operation difficulty and shortening the operation time.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a minimally invasive embedding guide sleeve for locking a steel plate screw.
Background
At present, fracture is treated by a locking steel plate in clinical orthopedic surgery, the locking steel plate is provided with a locking hole with connecting threads, during treatment, a screw rod part of a locking screw is fixed in a bone, the head part of the locking screw is in threaded connection with the locking hole, in addition, in order to reduce the damage to skin soft tissues of a patient during surgery, the locking steel plate screw is mostly in a minimally invasive embedding mode, and in order to help the screw to be smoothly and minimally invasive embedded, minimally invasive nail embedding auxiliary tools matched with the locking steel plate are also available in the market at present, but the original auxiliary tools are large in size, heavy in weight, easy to assemble and disassemble, very complex, time-consuming and labor-consuming, and the surgery time is invisibly increased.
Disclosure of Invention
The invention provides a locking steel plate screw minimally invasive implantation guide sleeve, overcomes the defects in the prior art, and can effectively solve the problems that the existing auxiliary tool for helping the locking steel plate screw minimally invasive implantation is complex in assembly and disassembly, time-consuming and labor-consuming, so that the operation difficulty is improved, and the operation time is prolonged.
The technical scheme of the invention is realized by the following measures: the utility model provides a guide sleeve is put into to locking steel plate screw wicresoft, includes and forms and the lower extreme can be in the downthehole sleeve body of locking steel plate by left half barrel and right half barrel detachable concatenation, and sleeve internal portion is formed with puts the nail guide way that link up from top to bottom, puts nail guide way including the last guide way that can supply the head of screw to pass through and the lower guide way that can supply the screw rod portion of screw to pass through, goes up guide way and lower guide way top-down and sets gradually and be linked together.
The following is further optimization or/and improvement of the technical scheme of the invention:
the left half cylinder body can comprise a left upper half cylinder body part, a left half connecting ring table part and a left lower half cylinder body part, a left thread section is arranged on the outer side wall of the left lower half cylinder body part, the inner side of the lower end of the left upper half cylinder body part is fixedly connected with the outer side of the left half connecting ring table part, and the outer side of the upper end of the left lower half cylinder body part is fixedly connected with the inner side of the left half connecting ring table part; the right half cylinder body comprises an upper right half cylinder body part, a right half connecting ring table part and a right lower half cylinder body part, the outer side wall of the right lower half cylinder body part is provided with a right thread section, the inner side of the lower end of the upper right half cylinder body part is fixedly connected with the outer side of the right half connecting ring table part, and the outer side of the upper end of the lower right half cylinder body part is fixedly connected with the inner side of the right half connecting ring table part; all be equipped with the hook type slot that extends along its length direction on the lateral wall of both sides around the first barrel portion in a left side, all be equipped with the hook type inserted block that can only follow hook type slot round trip to slide and insert or withdraw from hook type slot on the right barrel portion front and back both sides section of thick bamboo wall of corresponding hook type slot position, the hook type inserted block is pegged graft in hook type slot so that first barrel portion in a left side and first barrel portion in a right side detachable concatenation form the inside last barrel portion that has last direction passageway together, first barrel portion and first barrel portion in a left side and the butt joint of first barrel portion in a right side form the inside lower barrel portion that has down direction passageway, left side screw thread section and right screw thread section butt joint form be used for with the connecting thread of the locking hole inner wall threaded connection of locking steel.
The top end of the hook-shaped inserting block and the top wall of the hook-shaped slot can be abutted, the first avoidance notch and the second avoidance notch which are arranged at intervals are arranged on the cylinder walls of the front side and the rear side of the upper left half cylinder body part corresponding to the position of the hook-shaped slot, the third avoidance notch and the fourth avoidance notch which are matched with the first avoidance notch and the second avoidance notch in a one-to-one correspondence mode are arranged on the hook-shaped inserting block, the lower end of the fourth avoidance notch extends to the bottom end of the hook-shaped inserting block, the hook-shaped inserting block which is arranged above the third avoidance notch and the hook-shaped inserting block which is arranged between the third avoidance notch and the fourth avoidance notch can respectively avoid the notch and retreat from the hook-shaped slot through the first avoidance notch and the second avoidance notch after sliding downwards for a certain distance along the.
The height of the lower barrel part can be equal to or slightly higher than the depth of the locking hole of the locking steel plate, and the certain distance is 5-6 mm.
A cylindrical drill rod guide sleeve inner core can be inserted into the lower guide channel, a soft tissue puncture inner core is inserted into the drill rod guide sleeve inner core, the soft tissue puncture inner core is of a needle-shaped structure with a conical tip at the lower end, and the outer side surface of the lower end of the drill rod guide sleeve inner core is a conical surface with a small lower part and a large upper part.
The outer side of the upper end of the upper left half cylinder body part can be fixedly connected with a left handle, and the outer side of the upper end of the upper right half cylinder body part is fixedly connected with a right handle.
The upper side of the right end of the right handle can be hinged with a gland, the left end of the gland is bent downwards to form a knuckle part, the knuckle part is buckled on the outer edge of the left end of the left handle, a through hole which is communicated up and down is arranged on the gland corresponding to the position of the upper guide channel, and the diameter of the through hole is larger than or equal to the inner diameter of the upper guide channel.
The right-hand member face of above-mentioned left hand handle and the left end face of right hand handle can be laminated together, be equipped with on the left end face of right hand handle and hold the chamber, it is equipped with the locating pin pole of action about can to hold the intracavity, be equipped with the locating hole on the left hand handle right-hand member face of corresponding locating pin pole position, locating pin pole left end is inserted and is located in the locating hole, locating pin pole and holding intracavity wall between be equipped with reset spring, the right hand handle top surface is equipped with and holds the fluting of chamber intercommunication, be equipped with in the fluting can control the action and with the driving lever that the locating pin pole is connected, the driving lever upper end is worn out to the fluting top.
The invention has reasonable and compact structure, convenient use, small volume and light weight, not only guides the opposite nail through the threaded connection of the lower end of the sleeve body and the locking hole of the locking steel plate, but also can prevent the damage to the surrounding skin soft tissues when drilling a drill rod and screwing in a screw, avoids the influence on the rotation of a drill bit caused by the screwing in of muscle fibers into the threads of an electric drill, only needs to screw out the lower end of the sleeve from the locking hole of the locking steel plate and then separate the left half cylinder body and the right half cylinder body when disassembling, has quick, convenient, time-saving and labor-saving whole assembling and disassembling process, thereby reducing the operation difficulty and shortening the operation time.
Drawings
Fig. 1 is a schematic front view of a first embodiment of the present invention.
Fig. 2 is a schematic top view of the structure of fig. 1.
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 1.
Fig. 4 is a schematic sectional view taken along line a-a of fig. 2.
Fig. 5 is a schematic perspective view of an embodiment of the present invention.
Fig. 6 is a perspective exploded view of an embodiment of the present invention.
Fig. 7 is a schematic perspective view of a left half cylinder according to a first embodiment of the present invention.
Fig. 8 is a schematic perspective view of a right half cylinder according to a first embodiment of the present invention.
FIG. 9 is a schematic cross-sectional view of the auxiliary nail placement device according to an embodiment of the present invention.
Fig. 10 is a perspective exploded view of a second embodiment of the present invention.
Fig. 11 is a schematic front view of a third embodiment of the present invention.
Fig. 12 is a schematic front view of a fourth embodiment of the present invention.
Fig. 13 is an enlarged schematic view of a portion a of fig. 12.
The codes in the figures are respectively: the device comprises an upper guide channel 1, a lower guide channel 2, an upper left half barrel part 3, a left half connecting ring platform part 4, a lower left half barrel part 5, a left thread section 6, an upper right half barrel part 7, a right half connecting ring platform part 8, a lower right barrel part 9, a right thread section 10, a hook-shaped slot 11, a hook-shaped insert 12, a first avoidance notch 13, a second avoidance notch 14, a third avoidance notch 15, a fourth avoidance notch 16, a drill rod guide sleeve inner core 17, a soft tissue puncture inner core 18, a left handle 19, a right handle 20, a gland 21, a coupler tongue 22, an accommodating cavity 23, a positioning pin rod 24, a positioning hole 25, a return spring 26, a deflector rod 27, a locking steel plate 28 and a screw 29.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described with reference to the following examples and figures:
the first embodiment is as follows: as shown in fig. 1-9, the minimally invasive embedding guide sleeve for locking steel plate screws comprises a sleeve body which is formed by splicing a left half cylinder body and a right half cylinder body in a separable manner, the lower end of the sleeve body can be in threaded connection with a locking hole of a locking steel plate 28, a vertically through nail placing guide channel is formed in the sleeve body, the nail placing guide channel comprises an upper guide channel 1 through which the head of a screw 29 can pass and a lower guide channel 2 through which the screw part of the screw 29 can pass, and the upper guide channel 1 and the lower guide channel 2 are sequentially arranged and communicated from top to bottom.
According to the requirement, the upper guide channel 1 and the lower guide channel 2 are both cylindrical channels, the inner diameter of the upper guide channel 1 is slightly larger than the diameter of the head part of the screw 29, the inner diameter of the lower guide channel 2 is slightly larger than the diameter of the screw part of the screw 29, when the minimally invasive implantation operation of the locking steel plate 28 and the screw 29 is carried out, an operator cuts a small skin incision through the far end and the near end of the fracture, inserts a small opening cut along one side of the locking steel plate 28 into the incision and performs blunt separation along the surface of periosteum to the incision direction of the other end until the locking steel plate 28 is exposed from the incision, at the moment, a locking hole on the locking steel plate 28 covered by soft tissues such as skin muscles and the like between the small incisions at the two ends of the fracture cannot be displayed, then a rod-shaped puncture needle with one conical tip end and slightly smaller diameter than the inner diameter of the lower guide channel 2 is penetrated in the lower guide channel 2 of the, then the puncture needle is taken out, the lower end of the sleeve body is connected in the locking hole of the locking steel plate 28 in a threaded manner to complete the fixed connection between the sleeve body and the locking steel plate 28, a drill rod passes through the lower guide channel 2 to drill the bone, the drill rod is withdrawn after the drilling is completed, then the screw 29 is directly screwed in along the screw placing guide channel under the assistance of an electric drill, when the screw 29 is screwed in for a certain depth, a part of the screw 29 is already screwed in the bone through the lower guide channel 2, the head part of the screw 29 is positioned in the upper guide channel 1, and the distance between the head part of the screw 29 and the bottom wall of the upper guide channel 1 is larger than the withdrawing distance required when the lower end of the sleeve body is screwed out of the locking hole of the locking steel plate 28, at the moment, the lower end of the sleeve body is screwed out of the locking hole of the locking steel plate 28, and then the left half cylinder, only the screw 29 which is positioned in the locking hole of the locking steel plate 28 and has fixed direction is left, and then the screw 29 is screwed by the electric drill until the head of the screw 29 is connected with the locking hole of the locking steel plate 28 by screw thread, thereby completing the minimally invasive implantation of the screw 29 of the locking steel plate 28; compared with the traditional auxiliary tool for assisting the minimally invasive insertion of the screw 29 of the locking steel plate 28, the invention can realize the assembly with the locking steel plate 28 through the threaded connection of the lower end of the sleeve body and the locking hole of the locking steel plate 28, when in disassembly, the lower end of the sleeve is only required to be screwed out of the locking hole of the locking steel plate 28 and then the left half cylinder body and the right half cylinder body are separated, the whole assembly and disassembly process is quick, convenient, time-saving and labor-saving, thereby reducing the operation difficulty and shortening the operation time, and through the arrangement of the invention, not only the drill rod can play a role in guiding when drilling and screwing the screw 29, and can prevent the deviation of the nail setting direction from causing the failure of the complete locking of the screw 29 and the locking steel plate 28, in addition, the soft tissue of the surrounding skin can be prevented from being damaged when the drill rod is drilled and the screw 29 is screwed in, and the muscle fibers are prevented from being screwed into the threads of the electric drill to influence the rotation of the drill bit.
The first embodiment can be further optimized or/and improved according to actual needs:
as shown in fig. 1-9, the left half cylinder comprises a left upper half cylinder part 3, a left half connecting ring table part 4 and a left lower half cylinder part 5, a left thread section 6 is arranged on the outer side wall of the left lower half cylinder part 5, the inner side of the lower end of the left upper half cylinder part 3 is fixedly connected with the outer side of the left half connecting ring table part 4, and the outer side of the upper end of the left lower half cylinder part 5 is fixedly connected with the inner side of the left half connecting ring table part 4; the right half cylinder comprises a right upper half cylinder body part 7, a right half connecting ring table part 8 and a right lower half cylinder body part 9, a right thread section 10 is arranged on the outer side wall of the right lower half cylinder body part 9, the inner side of the lower end of the right upper half cylinder body part 7 is fixedly connected with the outer side of the right half connecting ring table part 8, and the outer side of the upper end of the right lower half cylinder body part 9 is fixedly connected with the inner side of the right half connecting ring table part 8; the outer side walls of the front side and the rear side of the upper left half barrel body 3 are provided with hook type slots 11 extending along the length direction, the barrel walls of the front side and the rear side of the right half barrel body corresponding to the positions of the hook type slots 11 are provided with hook type insertion blocks 12 which can only be inserted into or withdrawn from the hook type slots 11 along the back-and-forth sliding of the hook type slots 11, the hook type insertion blocks 12 are inserted into the hook type slots 11 so that the upper left half barrel body 3 and the upper right half barrel body 7 can be spliced together in a separating mode to form an upper barrel body part with an upper guide channel 1 inside, the lower left half barrel body 5 and the lower right half barrel body 9 are butted to form a lower barrel body part with a lower guide channel 2 inside, and the left thread section 6 and the right thread section 10 are butted to form a connecting thread connected with the inner wall of a locking hole.
According to requirements, the left lower half cylinder part 5 and the right lower half cylinder part 9 can be in a semi-cylindrical shape or a similar semi-cylindrical shape, the left upper half cylinder part 3 and the right upper half cylinder part 7 can be in a semi-cylindrical shape or a similar semi-cylindrical shape, the left upper half cylinder part 3, the left connecting ring table part 4 and the left lower half cylinder part 5 are integrally formed, the right upper half cylinder part 7, the right connecting ring table part 8, the right lower half cylinder part 9 and the hook type insert block 12 are integrally formed, the left half cylinder part and the right half cylinder part can be spliced in a separable mode through the arrangement of the hook type slot 11 and the hook type insert block 12, therefore, the left half cylinder part and the right half cylinder part which are spliced together can be separated by moving oppositely along the direction of the hook type slot 11, the left thread section 6 and the right thread section 10 are butted together to form a connecting thread for being in threaded connection with the inner wall of a locking hole of a locking steel plate 28 after the left lower half cylinder part 5 and the right lower half cylinder part 9, therefore, the lower left half barrel body 5 and the lower right half barrel body 9 can be connected in the locking hole of the locking steel plate 28 through the connecting thread in a screwed mode after being butted together, when the screw 29 is screwed into the device along the screw placing guide channel of the device to a certain depth and then the device is to be disassembled, the lower barrel body formed by butting the lower left half barrel body 5 and the lower right half barrel body 9 is firstly screwed out from the locking hole of the locking steel plate 28, then the left half barrel body or the right half barrel body is singly slid along the direction of the hook-shaped slot 11 so that the hook-shaped insert block 12 is completely withdrawn from the hook-shaped slot 11, the left half barrel body or the right half barrel body can be separated and disassembled from the screw 29, and the whole disassembling process is simple, convenient, time-saving and labor-saving.
As shown in fig. 1-9, the top end of the hook-shaped insertion block 12 abuts against the top wall of the hook-shaped slot 11, the front and rear side cylinder walls of the upper left half cylinder portion 3 corresponding to the position of the hook-shaped slot 11 are respectively provided with a first avoidance notch 13 and a second avoidance notch 14 which are arranged at an interval from top to bottom, the hook-shaped insertion block 12 is provided with a third avoidance notch 15 and a fourth avoidance notch 16 which are respectively matched with the first avoidance notch 13 and the second avoidance notch 14 in a one-to-one correspondence manner, the lower end of the fourth avoidance notch 16 extends to the bottom end of the hook-shaped insertion block 12, the hook-shaped insertion block 12 above the third avoidance notch 15 and the hook-shaped insertion block 12 between the third avoidance notch 15 and the fourth avoidance notch 16 can respectively exit from the hook-shaped slot 11 through the first avoidance notch 13 and the second avoidance notch 14 after sliding downwards for a certain distance along the hook-shaped slot 11. According to requirements, the length of the hook-shaped insertion block 12 above the third avoidance notch 15 is smaller than that of the first avoidance notch 13, the length of the hook-shaped insertion block 12 between the third avoidance notch 15 and the fourth avoidance notch 16 is smaller than that of the second avoidance notch 14, so that when the left half cylinder and the right half cylinder are assembled, the hook-shaped insertion block 12 above the third avoidance notch 15 is only required to be aligned in the first avoidance notch 13, the hook-shaped insertion block 12 between the third avoidance notch 15 and the fourth avoidance notch 16 is aligned in the second avoidance notch 14, and then the right half cylinder is moved upwards relative to the left half cylinder, so that the upper end of the hook-shaped insertion block 12 above the third avoidance notch 15 is inserted into the hook-shaped slot 11 above the first avoidance notch 13 and the upper end of the hook-shaped insertion block 12 between the third avoidance notch 15 and the fourth avoidance notch 16 is inserted into the hook-shaped slot 11 above the second avoidance notch 14, thereby assemble left half barrel and right half barrel together, and in the same way, when will split into left half barrel and right half barrel, only need the right half barrel of relative left half barrel downstream, make the hook type inserted block 12 that is located the third and dodges 15 tops all move back to first dodge in breach 13 and make the hook type inserted block 12 that is located between third dodge breach 15 and the fourth dodge breach 16 all move back to second dodge breach 14, then left half barrel and right half barrel of left-right separation can, through first dodge breach 13, second dodge breach 14, notch 15 and the fourth setting of dodging breach 16 are dodged to the third, not only realized the quick dismouting of left half barrel and right half barrel, and strengthened the structural stability when left half barrel and right half barrel splice and form the barrel together.
As shown in fig. 9, the lower barrel portion has a height equal to or slightly greater than the depth of the locking hole of the locking steel plate 28, and the certain distance is 5 mm to 6 mm. According to the requirement, the height of the upper end of the hook-shaped insert block 12 above the third avoidance notch 15, which is higher than the first avoidance notch 13, is the same as the height of the upper end of the hook-shaped insert block 12 between the third avoidance notch 15 and the fourth avoidance notch 16, which is higher than the second avoidance notch 14, and both the heights are 5 mm to 6 mm, so that after the right half cylinder is moved downwards relative to the left half cylinder by the same distance as the height value, the hook-shaped insert blocks 12 above the third avoidance notch 15 can be all retracted into the first avoidance notch 13, and the hook-shaped insert blocks 12 between the third avoidance notch 15 and the fourth avoidance notch 16 can be all retracted into the second avoidance notch 14, and then the left half cylinder and the right half cylinder can be separated, and by setting the certain distance to be 5 mm to 6 mm, the space requirement for separating the left half cylinder and the right half cylinder can be met only by a small moving space, thus ensuring that as many screws 29 as possible are screwed into the bone mass; the height of the lower cylinder body is equal to or slightly higher than the depth of the locking hole of the locking steel plate 28, so that the connection strength between the lower cylinder body and the locking hole of the locking steel plate 28 during screwing is guaranteed, and the screws 29 can be screwed into bone as much as possible.
As shown in the attached figures 1-9, the upper outer side of the left upper half cylindrical body 4 is fixedly connected with a left handle 19, and the upper outer side of the right upper half cylindrical body 7 is fixedly connected with a right handle 20. Thereby facilitating the operation of holding the sleeve body by the operator.
Example two: as shown in fig. 10, a cylindrical drill rod guide sleeve inner core 17 is inserted into the lower guide channel 2, a soft tissue puncture inner core 18 is inserted into the drill rod guide sleeve inner core 17, the soft tissue puncture inner core 18 is a needle-shaped structure with a conical tip at the lower end, and the outer side surface of the lower end of the drill rod guide sleeve inner core 17 is a conical surface with a small lower part and a large upper part. According to the requirement, the outer diameter of the drill rod guide sleeve inner core 17 is slightly smaller than the inner diameter of the lower guide channel 2, the outer diameter of the soft tissue puncture inner core 18 is slightly smaller than the inner diameter of the drill rod guide sleeve inner core 17, when in use, the soft tissue puncture inner core 18 is used for puncturing skin soft tissue to enable the lower end of the sleeve body to be close to the position of the locking hole of the locking steel plate 28, then the soft tissue puncture inner core 18 is taken out to keep the drill rod guide sleeve inner core 17, the lower end of the sleeve body is in threaded connection with the locking hole of the locking steel plate 28 to complete the fixed connection between the sleeve body and the locking steel plate 28, a drill rod with the diameter slightly smaller than the inner diameter of the drill rod guide sleeve inner core 17 is penetrated into the drill rod guide sleeve inner core 17 to drill the bone, the drill rod and the drill rod guide sleeve inner core 17 are retreated after the drilling, therefore, in the process of connecting the sleeve body to the locking hole of the locking steel plate 28 in a threaded mode, the soft tissue puncture inner core 18 and the drill rod guide sleeve inner core 17 puncture the skin soft tissue, damage to the skin soft tissue on the periphery is reduced, in addition, when the drill rod drills the bone, the drill rod guide sleeve inner core 17 is always sleeved on the outer side of the drill rod, further damage to the skin soft tissue on the periphery when the drill bit directly drills a hole in the wound can be avoided, and the phenomenon that the rotation of the drill bit is influenced when muscle fibers are screwed into the threads of the electric drill can be avoided.
Example three: as shown in fig. 11, a pressing cover 21 is hinged to the upper side of the right end of the right handle 20, the left end of the pressing cover 21 is bent downward to form a hook tongue portion 22, the hook tongue portion 22 is fastened to the outer edge of the left end of the left handle 19, a through hole which penetrates up and down is formed in the pressing cover 21 corresponding to the position of the upper guide channel 1, and the diameter of the through hole is larger than or equal to the inner diameter of the upper guide channel 1. The left handle 19 and the right handle 20 are buckled together through the gland 21, so that the left half cylinder body and the right half cylinder body are prevented from shifting in the vertical direction in a splicing state, the stability of the left half cylinder body and the right half cylinder body in splicing is ensured, and when the left half cylinder body and the right half cylinder body are to be split, the coupler knuckle part 22 of the gland 21 only needs to be pulled open from the outer edge of the left end of the left handle 19.
Example four: as shown in fig. 12-13, the right end face of the left handle 19 is attached to the left end face of the right handle 20, the left end face of the right handle 20 is provided with a containing cavity 23, a positioning pin 24 capable of moving left and right is arranged in the containing cavity 23, the right end face of the left handle 19 corresponding to the positioning pin 24 is provided with a positioning hole 25, the left end of the positioning pin 24 is inserted into the positioning hole 25, a return spring 26 is arranged between the positioning pin 24 and the inner wall of the containing cavity 23, the top face of the right handle 20 is provided with a slot communicated with the containing cavity 23, a shift lever 27 capable of moving left and right and connected with the positioning pin 24 is arranged in the slot, the upper end of the shift lever 27 penetrates out of the slot, and the shift lever 27 can drive the positioning pin 24 to exit. The left end of the positioning pin rod 24 is inserted into the positioning hole 25, so that the left half cylinder and the right half cylinder are prevented from shifting in the vertical direction in a splicing state, the stability of the left half cylinder and the right half cylinder when being spliced together is ensured, when the left half cylinder and the right half cylinder are to be split, the positioning pin rod 24 is withdrawn from the positioning hole 25 only by stirring the shift lever 27 rightwards, and the left half cylinder and the right half cylinder can move up and down relatively and then be split.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. The utility model provides a guide sleeve is put into to locking steel plate screw wicresoft which characterized in that includes and is formed and lower extreme ability threaded connection in the locking hole of locking steel plate by half barrel on the left side and half barrel on the right side detachable concatenation, and the internal portion of cover is formed with puts the nail guide way that link up from top to bottom, puts nail guide way including the last guide way that the head that can supply the screw passes through and the lower guide way that the screw rod portion that can supply the screw passes through, goes up guide way and lower guide way top-down and sets gradually and be linked together.
2. The locking steel plate screw minimally invasive implantation guide sleeve according to claim 1, wherein the left half cylinder comprises a left upper half cylinder body, a left half connecting ring table portion and a left lower half cylinder body, a left thread section is arranged on the outer side wall of the left lower half cylinder body, the inner side of the lower end of the left upper half cylinder body is fixedly connected with the outer side of the left half connecting ring table portion, and the outer side of the upper end of the left lower half cylinder body is fixedly connected with the inner side of the left half connecting ring table portion; the right half cylinder body comprises an upper right half cylinder body part, a right half connecting ring table part and a right lower half cylinder body part, the outer side wall of the right lower half cylinder body part is provided with a right thread section, the inner side of the lower end of the upper right half cylinder body part is fixedly connected with the outer side of the right half connecting ring table part, and the outer side of the upper end of the lower right half cylinder body part is fixedly connected with the inner side of the right half connecting ring table part; all be equipped with the hook type slot that extends along its length direction on the lateral wall of both sides around the first barrel portion in a left side, all be equipped with the hook type inserted block that can only follow hook type slot round trip to slide and insert or withdraw from hook type slot on the right barrel portion front and back both sides section of thick bamboo wall of corresponding hook type slot position, the hook type inserted block is pegged graft in hook type slot so that first barrel portion in a left side and first barrel portion in a right side detachable concatenation form the inside last barrel portion that has last direction passageway together, first barrel portion and first barrel portion in a left side and the butt joint of first barrel portion in a right side form the inside lower barrel portion that has down direction passageway, left side screw thread section and right screw thread section butt joint form be used for with the connecting thread of the locking hole inner wall threaded connection of locking steel.
3. The minimally invasive insertion guide sleeve for the locking steel plate screw according to claim 2, wherein a top end of the hook-shaped insertion block abuts against a top wall of the hook-shaped slot, a first avoidance notch and a second avoidance notch are formed in front and rear side cylinder walls of a left upper half cylinder body portion corresponding to the position of the hook-shaped slot at intervals, the hook-shaped insertion block is provided with a third avoidance notch and a fourth avoidance notch which are respectively matched with the first avoidance notch and the second avoidance notch in a one-to-one correspondence manner, a lower end of the fourth avoidance notch extends to a bottom end of the hook-shaped insertion block, and the hook-shaped insertion block located above the third avoidance notch and the hook-shaped insertion block located between the third avoidance notch and the fourth avoidance notch can respectively exit the hook-shaped slot through the first avoidance notch and the second avoidance notch after sliding downwards for a certain distance along the hook-shaped slot.
4. The locking plate screw minimally invasive deployment guide sleeve according to claim 3, wherein the lower sleeve portion has a height equal to or slightly greater than a locking hole depth of the locking plate, and the certain distance is 5 mm to 6 mm.
5. The locking steel plate screw minimally invasive implantation guide sleeve according to claim 1, 2, 3 or 4, characterized in that a cylindrical drill rod guide sleeve inner core is inserted into the lower guide channel, a soft tissue puncture inner core is inserted into the drill rod guide sleeve inner core, the soft tissue puncture inner core is a needle-shaped structure with a conical tip at the lower end, and the outer side surface of the lower end of the drill rod guide sleeve inner core is a conical surface with a small lower part and a large upper part.
6. The locking steel plate screw minimally invasive implantation guide sleeve according to claim 2, 3 or 4, wherein a left handle is fixedly connected to the outer side of the upper end of the left upper half cylinder body, and a right handle is fixedly connected to the outer side of the upper end of the right upper half cylinder body.
7. The locking plate screw minimally invasive deployment guide sleeve according to claim 5, wherein a left handle is fixedly connected to an outer side of an upper end of the left upper half cylinder, and a right handle is fixedly connected to an outer side of an upper end of the right upper half cylinder.
8. The minimally invasive imbedding guide sleeve for locking steel plate screws according to claim 6, wherein a gland is hinged to the upper side of the right end of the right handle, the left end of the gland is bent downwards to form a knuckle part, the knuckle part is buckled on the outer edge of the left end of the left handle, a through hole which penetrates up and down is formed in the gland corresponding to the position of the upper guide channel, and the diameter of the through hole is larger than or equal to the inner diameter of the upper guide channel.
9. The minimally invasive imbedding guide sleeve for locking steel plate screws according to claim 7, wherein a gland is hinged to the upper side of the right end of the right handle, the left end of the gland is bent downwards to form a knuckle part, the knuckle part is buckled on the outer edge of the left end of the left handle, a through hole which penetrates up and down is formed in the gland corresponding to the position of the upper guide channel, and the diameter of the through hole is larger than or equal to the inner diameter of the upper guide channel.
10. The minimally invasive insertion guide sleeve for the locking steel plate screw according to claim 6, wherein a right end face of the left handle is attached to a left end face of the right handle, a receiving cavity is formed in the left end face of the right handle, a positioning pin rod capable of moving left and right is arranged in the receiving cavity, a positioning hole is formed in the right end face of the left handle corresponding to the positioning pin rod, the left end of the positioning pin rod is inserted into the positioning hole, a return spring is arranged between the positioning pin rod and the inner wall of the receiving cavity, a slot communicated with the receiving cavity is formed in the top face of the right handle, a shifting rod capable of moving left and right and connected with the positioning pin rod is arranged in the slot, the upper end of the shifting rod penetrates out of the slot, and the shifting rod can drive the.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011232532.XA CN112353478A (en) | 2020-11-06 | 2020-11-06 | Locking steel plate screw minimally invasive imbedding guide sleeve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011232532.XA CN112353478A (en) | 2020-11-06 | 2020-11-06 | Locking steel plate screw minimally invasive imbedding guide sleeve |
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| CN112353478A true CN112353478A (en) | 2021-02-12 |
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| CN202011232532.XA Pending CN112353478A (en) | 2020-11-06 | 2020-11-06 | Locking steel plate screw minimally invasive imbedding guide sleeve |
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