CN114938991A - Minimally invasive pedicle screw implanting equipment - Google Patents
Minimally invasive pedicle screw implanting equipment Download PDFInfo
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- CN114938991A CN114938991A CN202210577701.6A CN202210577701A CN114938991A CN 114938991 A CN114938991 A CN 114938991A CN 202210577701 A CN202210577701 A CN 202210577701A CN 114938991 A CN114938991 A CN 114938991A
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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
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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
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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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
- A61B2017/564—Methods for bone or joint treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
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Abstract
The invention relates to the technical field of medical instruments and discloses minimally invasive pedicle screw implanting equipment. The handle is provided with a first mounting hole along a first direction, a metal insert is arranged at the near end of the first mounting hole, and the metal insert is provided with a threaded hole; the navigation screwdriver is provided with a second mounting hole along the first direction, and the near end of the navigation screwdriver is connected to the handle; the pedicle screw is provided with a third mounting hole along the first direction, and the far end of the navigation screwdriver is connected to the pedicle screw; the sandwich guide wire sequentially penetrates through the first mounting hole, the second mounting hole and the third mounting hole, the near end of the sandwich guide wire is in threaded connection with the threaded hole, the sandwich guide wire is in conductive connection with the metal insert, the far end of the sandwich guide wire is exposed out of the third mounting hole, and an insulating layer is arranged on the outer wall of the sandwich guide wire; the first end of the resistance detection unit is electrically connected to the metal insert, the second end of the resistance detection unit is electrically connected to the pedicle screw, and the resistance detection unit is configured to detect the resistance value of a substance between the far end of the sandwich guide wire and the pedicle screw.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to minimally invasive pedicle screw implanting equipment.
Background
Medically, human bone is divided into cancellous and compact bone. Cancellous bone is formed by interweaving a plurality of pin-shaped or plate-shaped bone materials called trabeculae. Cancellous bone is distributed at both ends of a long bone, a short bone, a flat bone and the inside of an irregular bone. The spongy bone is formed by arranging bone trabeculae which are mutually interwoven and is distributed in the bone. The bone is classified into cortical bone and cancellous bone, and the former accounts for 80% of the total bone mass.
At present, in minimally invasive spine surgery, because the minimally invasive spine surgery is not visual operation, doctors determine openings, minimally invasive pedicle screws and implanted pedicle screws through experience and X-ray irradiation. The blind screwing of the screw can easily cause the error implantation of the screw. For example, pedicle screws are relatively easy to penetrate out of the cortical bone, causing additional trauma. The peripheral structure of the spine is complex and is closer to the spinal cord, nerves, blood vessels, etc., and the injury is light and bleeding, while the serious injury is paralysis or dyskinesia.
Based on this, there is a need for a minimally invasive pedicle screw implantation device to solve the existing problems.
Disclosure of Invention
Based on the above, the invention aims to provide a minimally invasive pedicle screw implanting device, and medical staff can adjust the position of a pedicle screw in time according to the resistance and the current, so that the pedicle screw is correctly implanted without deviation, and additional damage to a patient is avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a minimally invasive pedicle screw implantation device comprising:
the handle is provided with a first mounting hole along a first direction, a metal insert is arranged at the near end of the first mounting hole, and the metal insert is provided with a threaded hole;
the navigation screwdriver is provided with a second mounting hole along the first direction, and the proximal end of the navigation screwdriver is connected to the handle;
the pedicle screw is provided with a third mounting hole along the first direction, and the distal end of the navigation screwdriver is connected to the pedicle screw;
the sandwich guide wire sequentially penetrates through the first mounting hole, the second mounting hole and the third mounting hole, the near end of the sandwich guide wire is in threaded connection with the threaded hole, the sandwich guide wire is in conductive connection with the metal insert, the far end of the sandwich guide wire is exposed out of the third mounting hole, and an insulating layer is arranged on the outer wall of the sandwich guide wire;
the first end of the resistance detection unit is electrically connected to the metal insert, the second end of the resistance detection unit is electrically connected to the pedicle screw, and the resistance detection unit is configured to detect the resistance value of a substance between the distal end of the sandwich guide wire and the pedicle screw.
As a preferred technical scheme of minimally invasive pedicle screw implantation equipment, the pedicle screw comprises a screw head, so the screw head comprises a cylindrical surface section and a conical surface section which are connected with each other, the conical surface section is positioned at the far end of the pedicle screw, and the cylindrical surface section and the conical surface section are both provided with external threads.
As a preferred technical scheme of minimally invasive pedicle screw implanting equipment, the far end of the navigation screw driver is provided with key teeth, the near end of the pedicle screw is provided with a key slot, and the key teeth are inserted into the key slot.
As a preferred technical scheme of the minimally invasive pedicle screw implanting equipment, the far end of the sandwich guide wire is a metal cutting edge.
As a preferred technical scheme of the minimally invasive pedicle screw implanting equipment, a rotating knob is arranged at the near end of the sandwich guide wire, a metal thread part is arranged on the rotating knob, and the metal thread part is in threaded and conductive connection with the metal insert.
As a preferred technical scheme of the minimally invasive pedicle screw implanting equipment, the far end of the handle is provided with a quick plug, the near end of the navigation screwdriver is provided with a quick plug, and the quick plug is detachably connected to the quick plug.
As a preferred technical scheme of the minimally invasive pedicle screw implanting device, a ratchet wheel assembly is arranged on the handle, and the handle can drive the navigation screwdriver and the pedicle screw to rotate in a single direction through the ratchet wheel assembly.
As a preferred technical scheme of minimally invasive pedicle screw implanting equipment, a metal conductor is arranged on the side wall of the first mounting hole, and the second end of the resistance detection unit is electrically connected to the metal conductor;
the navigation screwdriver is provided with a screwdriver rod, the near end of the screwdriver rod is electrically connected with the metal conductor, and the far end of the screwdriver rod is electrically connected with the pedicle screw.
As a preferred technical scheme of the minimally invasive pedicle screw implanting device, the navigation screwdriver further comprises a rotating sleeve, the rotating sleeve is sleeved on the screwdriver rod, the pedicle screw comprises a screw seat, and the screw seat is sleeved outside the rotating sleeve and is in threaded connection with the rotating sleeve.
As an optimal technical scheme of minimally invasive pedicle screw implanting equipment, the resistance detection unit comprises an alarm indicator lamp, a power supply control circuit module, a current control module and a computer processing module which are sequentially and electrically connected, wherein the alarm indicator lamp is electrically connected with the computer processing module and is embedded in the shell of the handle.
The invention has the beneficial effects that:
the invention provides minimally invasive pedicle screw implanting equipment, wherein the near end of a sandwich guide wire is in threaded connection with a threaded hole, so that the sandwich guide wire is fixed; on the other hand, the metal insert is electrically connected with the resistance detection unit, the resistance detection unit forms a first electrode through the far end of the sandwich guide wire, and the resistance detection unit forms a second electrode through the pedicle screw. During the application, the material of establishing is worn in the common contact of the lateral wall of the distal end of sandwich seal wire and pedicle of vertebral arch nail, different resistance and different electric currents that lead to through detecting biological tissue difference between first electrode and the second electrode, and show resistance size and electric current size, thereby judge the material type of wearing to establish, medical personnel can in time adjust the position of pedicle of vertebral arch nail according to resistance size and electric current size, thereby guarantee that pedicle of vertebral arch nail puts into correctly, it is not skew, avoid causing extra damage to the patient, endanger patient's life even, reduce the operation risk, the success rate of the operation is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings may be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural view of a minimally invasive pedicle screw implanting device provided by an embodiment of the invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is a schematic structural diagram of a navigation driver provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural view of a pedicle screw provided in accordance with an embodiment of the invention;
fig. 6 is a schematic structural view of a handle according to an embodiment of the present invention.
The figures are labeled as follows:
1. a handle; 11. a metal insert; 12. a quick connector; 13. a ratchet assembly; 14. a metal conductor; 15. a first mounting hole;
2. a navigation screwdriver; 21. a screwdriver rod; 22. rotating the sleeve; 221. anti-skid lines; 23. a key tooth; 24. quick plug;
3. pedicle screws; 31. a nail head; 311. a cylindrical section; 312. a conical surface section; 32. a nail seat; 321. cutting; 33. a third mounting hole;
4. a sandwich guidewire; 41. an insulating layer; 42. a metal cutting edge; 43. rotating a knob;
5. a resistance detection unit; 51. a power supply control circuit module; 52. a current control module; 53. a computer processing module; 54. and an alarm indicator light.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In this embodiment, the "proximal end" refers to the end near the doctor's operation, and the "distal end" refers to the end near the patient.
As shown in fig. 1 to 3, the present embodiment provides a minimally invasive pedicle screw implanting device, which includes a handle 1, a navigation driver 2, a pedicle screw 3, a sandwich guide wire 4, and a resistance detection unit 5.
Specifically, the handle 1 is provided with a first mounting hole 15 along a first direction, a metal insert 11 is arranged at the proximal end of the first mounting hole 15, and the metal insert 11 is provided with a threaded hole; the navigation screwdriver 2 is provided with a second mounting hole along the first direction, and the near end of the navigation screwdriver 2 is connected to the handle 1; the pedicle screw 3 is provided with a third mounting hole 33 along the first direction, and the far end of the navigation screwdriver 2 is connected to the pedicle screw 3; the sandwich guide wire 4 sequentially penetrates through the first mounting hole 15, the second mounting hole and the third mounting hole 33, and the near end of the sandwich guide wire 4 is in threaded connection with the threaded hole, so that on one hand, the sandwich guide wire 4 is fixed; on the other hand, the sandwich guide wire 4 is conductively connected to the resistance detection unit 5 through the metal insert 11, the far end of the sandwich guide wire 4 is exposed out of the third mounting hole 33, and the outer wall of the sandwich guide wire 4 is provided with an insulating layer 41; the first end of the resistance detection unit 5 is electrically connected to the metal insert 11, the second end is electrically connected to the pedicle screw 3, and the resistance detection unit 5 is configured to detect the resistance value of a substance between the distal end of the sandwiched guide wire 4 and the pedicle screw 3.
The resistance detection unit 5 forms a first electrode through the distal end of the sandwich guide wire 4, and the resistance detection unit 5 forms a second electrode through the pedicle screw 3. During the application, the material of establishing is worn in the common contact of distal end and the lateral wall of pedicle of vertebral arch nail 3 of sandwich seal wire 4, different resistance and different electric currents that lead to through detecting biological tissue difference between first electrode and the second electrode, and show resistance size and electric current size, thereby judge the material type of establishing, medical personnel can in time adjust the position of pedicle of vertebral arch nail 3 according to resistance size and electric current size, thereby guarantee that pedicle of vertebral arch nail 3 puts into correctly, do not deviate, avoid causing extra damage to the patient, endanger patient's life even, reduce the operation risk, improve the operation success rate. When pedicle of vertebral arch nail 3 carried out the tapping, conical surface section 312 contacted bone tissue earlier, and resistance detecting element 5 is pedicle of vertebral arch nail 3's implantation process developments navigation, in case pedicle of vertebral arch nail 3 implants the position and has the mistake, can remind medical personnel to adjust to guarantee that pedicle of vertebral arch nail 3's the correctness is put into, avoid pedicle of vertebral arch nail 3 to put by mistake, reduce and produce extra damage to the patient, guarantee operation safety, save operation time.
In order to facilitate the detachment and installation of the sandwiched guide wire 4 and the metal insert 11, as shown in fig. 1 and 2, a rotation knob 43 is provided at the proximal end of the sandwiched guide wire 4, and the rotation knob 43 is provided with a metal threaded portion which is threaded and electrically connected to the metal insert 11. Rotating the knob 43 improves the efficiency of the disassembly and assembly of the sandwiched guidewire 4.
Preferably, as shown in fig. 3, the distal end of the sandwiched guidewire 4 is a metal cutting edge 42. When the minimally invasive pedicle screw implanting equipment is used, the distal end of the sandwich guide wire 4 preferentially contacts bone tissues, the distal end of the sandwich guide wire 4 is a metal cutting edge 42, the bone tissues are convenient to wear, and the metal cutting edge 42 can improve the contact area and the contact strength with the bone tissues and improve the reliability of resistance detection. When the device is used, the rotary knob 43, the sandwich guide wire 4 and the metal cutting edge 42 are taken as a metal whole, the far end of the sandwich guide wire 4 transmits a contacted signal to the metal thread part, then the signal is transmitted to the metal insert 11 of the handle 1, and the metal insert 11 transmits the signal to one end of the resistance detection unit 5 to form a first electric level of a closed-loop circuit.
In this embodiment, as shown in fig. 4, the distal end of the navigation driver 2 is provided with a key tooth 23, the proximal end of the pedicle screw 3 is provided with a key slot, and the key tooth 23 is inserted into the key slot. The key slot and the key teeth 23 can prevent the pedicle screw 3 from rotating relative to the navigation driver 2, and when the navigation driver 2 rotates, the navigation driver 2 can drive the pedicle screw 3 to rotate through the key teeth 23, so that the pedicle screw 3 can be screwed in.
Among the prior art, the external diameter of pedicle screw is cylindricly, and the external diameter is the same promptly, and at the implantation in-process, when implanting the position and having the mistake, because pedicle screw has implanted and has formed the cavity in the bone, during the implantation angle of follow-up readjustment pedicle screw, because the cavity leads to pedicle screw's intensity to weaken greatly, is unfavorable for the long-term stability that pedicle screw implanted.
To solve the above problem, as shown in fig. 3 and 5, the pedicle screw 3 includes a head 31, so that the head 31 includes a cylindrical section 311 and a conical section 312 connected to each other, the conical section 312 is located at the distal end of the pedicle screw 3, and both the cylindrical section 311 and the conical section 312 are provided with external threads. In the process of implanting the pedicle screw 3, the diameter of the conical section 312 gradually increases from the far end to the near end, the design of the conical section 312 can not influence the strength of the replanting screw when the screw feeding direction needs to be adjusted, the position of the screw feeding is convenient for a doctor to adjust when in use, the stability of the long-term implantation of the pedicle screw 3 is ensured, and the pedicle screw is suitable for large-scale popularization and application.
Preferably, as shown in fig. 6, the distal end of the handle 1 is provided with a quick connector 12, the proximal end of the navigation driver 2 is provided with a quick connector 24, and the quick connector 24 is detachably connected to the quick connector 12 to realize quick connection of the navigation driver 2 and the handle 1. In this embodiment, the handle 1 is designed to be asymmetrical according to ergonomic design, and thus has a good grip feeling.
Further, a ratchet assembly 13 is arranged on the handle 1, and the handle 1 can drive the navigation screwdriver 2 and the pedicle screw 3 to rotate in a single direction through the ratchet assembly 13. In the present embodiment, the ratchet assembly 13 has three gears, the first gear is that when the handle 1 rotates forward, the navigation driver 2 and the pedicle screw 3 can be driven to rotate forward, and when the handle 1 rotates backward, the navigation driver 2 and the pedicle screw 3 cannot rotate; the second gear is that when the handle 1 rotates reversely, the navigation screwdriver 2 and the pedicle screw 3 can be driven to rotate reversely, and when the handle 1 rotates forwardly, the navigation screwdriver 2 and the pedicle screw 3 can not rotate; and when the handle 1 rotates forwards and backwards in the third gear, the navigation screwdriver 2 and the pedicle screw 3 rotate forwards and backwards along with the handle 1. The ratchet wheel assembly 13 is arranged, so that doctors with different handedness can conveniently implant the minimally invasive pedicle screws 3. It should be noted that the specific structure of the ratchet assembly 13 is conventional in the art, and will not be described herein.
Furthermore, a metal conductor 14 is arranged on the side wall of the first mounting hole 15, and the second end of the resistance detection unit 5 is electrically connected to the metal conductor 14; the navigation driver 2 is provided with a driver rod 21, a proximal end of the driver rod 21 is electrically connected to the metallic conductor 14, and a distal end of the driver rod 21 is electrically connected to the pedicle screw 3. The sandwich guide wire 4 is insulated from the metal conductor 14, the screwdriver rod 21 and the pedicle screw 3 through the insulating layer 41, so that the metal conductor 14, the screwdriver rod 21 and the pedicle screw 3 form a second electrode. In this embodiment, the proximal end of the driver shaft 21 is provided with a quick connector and the distal end of the driver shaft 21 is provided with a key tooth 23.
In order to prevent the pedicle screw 3 from falling off from the driver rod 21, as shown in fig. 4, the navigation driver 2 further comprises a rotating sleeve 22, the rotating sleeve 22 is sleeved on the driver rod 21, the pedicle screw 3 comprises a screw seat 32, the screw seat 32 is sleeved outside the rotating sleeve 22 and is in threaded connection with the rotating sleeve 22, so that the pedicle screw 3 is connected with the rotating sleeve 22, the pedicle screw 3 is prevented from axially moving relative to the navigation driver 2, and in the process of screwing the screw seat 32, the key teeth 23 of the driver rod 21 are disassembled in the key grooves. Preferably, the rotating sleeve 22 is further provided with an anti-slip thread 221 to facilitate the assembly of the rotating sleeve 22 with the nail seat 32.
In this embodiment, as shown in fig. 5, a weak notch 321 is preset on the nail seat 32, after the operation, the nail seat 32 is broken conveniently through the notch 321, then part of the nail seat 32 is withdrawn,
further, as shown in fig. 6, the resistance detection unit 5 includes an alarm indicator 54, and a power supply control circuit module 51, a current control module 52 and a computer processing module 53 which are electrically connected in sequence, wherein the alarm indicator 54 is electrically connected to the computer processing module 53 and is embedded in the housing of the handle 1. The power supply control circuit module 51, the current control module 52 and the computer processing module 53 are all arranged inside the handle 1, the power supply control circuit module 51 is electrically connected with the metal conductor 14, and the computer processing module 53 is electrically connected with the metal insert 11. When the pedicle screw 3 is implanted in an operation, substances contacted with the first electrode and the second electrode form certain resistance current, and the larger the current is, the contacted bone is looser, and even soft tissues or blood are formed. The system can feed back the received current to the alarm indicator lamp 54 to prompt a doctor, and the bone contacted by the sandwich guide wire 4 and the pedicle screw 3 can form a closed circuit through the resistance detection unit 5 and form feedback, so that the accuracy of the direction of the pedicle screw 3 in the operation can be monitored at any time, and the operation safety is improved. In the embodiment, when the pedicle screws 3 contact hard cortical bone, the navigation gives a prompt 1 in time; when the minimally invasive pedicle screw 3 contacts cancellous bone, the navigation can give a prompt 2; when the minimally invasive pedicle screw 3 contacts soft tissue or blood, the navigation gives a prompt 3. The three prompts can correspond to three colors of the alarm indicator lamp 54, and a doctor can know whether the position of the pedicle screw 3 is placed correctly or not through the colors of the alarm indicator lamp 54. It should be noted that the structures of the alarm indicator 54, the power supply control circuit module 51, the current control module 52 and the computer processing module 53 capable of detecting the resistance are conventional arrangements of those skilled in the art, and the working principle thereof will not be described herein.
After the pedicle screw 3 is implanted, the embodiment also provides a method for disassembling the minimally invasive pedicle screw implanting device, which comprises the following steps: firstly, the sandwich guide wire 4 is detached by rotating the knob 43; secondly, the handle 1 is separated from the navigation driver 2; then, the rotating sleeve 22 is separated from the nail seat 32, and the navigation driver 2 is disassembled; finally, the nail seat 32 is broken off at the incision 321, the nail head 31 is remained in the body, and the detachment of the minimally invasive pedicle nail implantation device is completed.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A minimally invasive pedicle screw implantation device, comprising:
the handle (1) is provided with a first mounting hole (15) along a first direction, a metal insert (11) is arranged at the near end of the first mounting hole (15), and the metal insert (11) is provided with a threaded hole;
a navigation screwdriver (2) provided with a second mounting hole along the first direction, wherein the proximal end of the navigation screwdriver (2) is connected to the handle (1);
the pedicle screw (3) is provided with a third mounting hole (33) along the first direction, and the distal end of the navigation screwdriver (2) is connected to the pedicle screw (3);
the sandwich guide wire (4) sequentially penetrates through the first mounting hole (15), the second mounting hole and the third mounting hole (33), the near end of the sandwich guide wire (4) is connected to the threaded hole in a threaded mode, the sandwich guide wire (4) is connected to the metal insert (11) in a conductive mode, the far end of the sandwich guide wire (4) is exposed out of the third mounting hole (33), and an insulating layer (41) is arranged on the outer wall of the sandwich guide wire (4);
the first end of the resistance detection unit (5) is in conductive connection with the metal insert (11), the second end of the resistance detection unit is in conductive connection with the pedicle screw (3), and the resistance detection unit (5) is configured to detect the resistance value of a substance between the far end of the sandwich guide wire (4) and the pedicle screw (3).
2. The minimally invasive pedicle screw implanting device according to claim 1, wherein the pedicle screw (3) comprises a head (31), so that the head (31) comprises a cylindrical section (311) and a conical section (312) connected with each other, the conical section (312) is located at a distal end of the pedicle screw (3), and the cylindrical section (311) and the conical section (312) are provided with external threads.
3. The minimally invasive pedicle screw implantation device according to claim 1, wherein a distal end of the navigation driver (2) is provided with a key tooth (23), a proximal end of the pedicle screw (3) is provided with a key slot, and the key tooth (23) is inserted into the key slot.
4. The minimally invasive pedicle screw implantation device according to claim 1, wherein the distal end of the sandwiched guidewire (4) is a metal cutting edge (42).
5. The minimally invasive pedicle screw implantation device according to claim 1, wherein a proximal end of the sandwiched guide wire (4) is provided with a turning knob (43), the turning knob (43) being provided with a metal threaded portion which is threaded and conductively connected to the metal insert (11).
6. The minimally invasive pedicle screw implantation device according to any one of claims 1-5, wherein a quick connector (12) is arranged at a distal end of the handle (1), and a quick connector (24) is arranged at a proximal end of the navigation driver (2), wherein the quick connector (24) is detachably connected to the quick connector (12).
7. The minimally invasive pedicle screw implanting device according to any one of claims 1-5, wherein a ratchet assembly (13) is arranged on the handle (1), and the handle (1) can drive the navigation driver (2) and the pedicle screw (3) to rotate in a single direction through the ratchet assembly (13).
8. The minimally invasive pedicle screw implantation device according to any one of claims 1-5, wherein a metal conductor (14) is arranged on a side wall of the first mounting hole (15), and a second end of the resistance detection unit (5) is electrically connected to the metal conductor (14);
the navigation screwdriver (2) is provided with a screwdriver rod (21), the near end of the screwdriver rod (21) is electrically connected with the metal conductor (14), and the far end of the screwdriver rod (21) is electrically connected with the pedicle screw (3).
9. The minimally invasive pedicle screw implanting device according to claim 8, wherein the navigation driver (2) further comprises a rotating sleeve (22), the rotating sleeve (22) is sleeved on the driver rod (21), the pedicle screw (3) comprises a screw seat (32), and the screw seat (32) is sleeved outside the rotating sleeve (22) and is in threaded connection with the rotating sleeve (22).
10. The minimally invasive pedicle screw implantation device according to any one of claims 1-5, wherein the resistance detection unit (5) comprises an alarm indicator lamp (54) and a power supply control circuit module (51), a current control module (52) and a computer processing module (53) which are electrically connected in sequence, and the alarm indicator lamp (54) is electrically connected to the computer processing module (53) and embedded in a shell of the handle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210577701.6A CN114938991A (en) | 2022-05-25 | 2022-05-25 | Minimally invasive pedicle screw implanting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210577701.6A CN114938991A (en) | 2022-05-25 | 2022-05-25 | Minimally invasive pedicle screw implanting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114938991A true CN114938991A (en) | 2022-08-26 |
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ID=82909876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210577701.6A Pending CN114938991A (en) | 2022-05-25 | 2022-05-25 | Minimally invasive pedicle screw implanting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114938991A (en) |
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2022
- 2022-05-25 CN CN202210577701.6A patent/CN114938991A/en active Pending
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