CN114848115A - Intervertebral space elastic distraction device capable of monitoring tension and pressure in real time - Google Patents
Intervertebral space elastic distraction device capable of monitoring tension and pressure in real time Download PDFInfo
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- CN114848115A CN114848115A CN202210435647.1A CN202210435647A CN114848115A CN 114848115 A CN114848115 A CN 114848115A CN 202210435647 A CN202210435647 A CN 202210435647A CN 114848115 A CN114848115 A CN 114848115A
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
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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
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
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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
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
Abstract
The invention discloses an intervertebral space elastic distraction device for monitoring tension and pressure in real time, which comprises a pedicle screw, an elastic element, a mandrel and a monitoring device, wherein the pedicle screw is fixed on the elastic element; the pedicle screw is provided with a breakable long arm for embedding an elastic element; the monitoring device comprises a core shaft, an elastic element, a monitoring device and a monitoring device, wherein the elastic element is sleeved on the core shaft, one end of the core shaft is provided with a U-shaped support, the monitoring device is provided with a mounting base, the mounting base is provided with a mounting hole corresponding to the U-shaped support, the mounting base drives the monitoring device to move on the U-shaped support, and the monitoring device is connected with the core shaft through a transmission device; the monitoring device is sleeved on the U-shaped support through the mounting base and is connected with the elastic element through the connecting rod, the connecting rod penetrates through the elastic element and the mounting base, and one end of the connecting rod is connected with the pedicle screw. The invention provides continuous and stable traction force through the elastic element, widens the intervertebral space, monitors the stress condition of the elastic rod in real time and provides a stable environment for the recovery of the lumbar vertebra.
Description
Technical Field
The invention relates to the field of medical instruments for orthopedic surgery, in particular to an intervertebral space elastic distraction device capable of monitoring tension and pressure in real time.
Background
With the arrival of the aging society, the incidence of lumbar fracture and lumbar disc herniation is increasing year by year, the proportion of patients needing to be solved by operation is getting larger and larger, the patients gradually become the main disease of spine surgery, the pedicle of vertebral arch technology is developed for decades, the pedicle of vertebral arch technology becomes a very mature spinal surgery technology, and the minimally invasive pedicle of vertebral arch technology popularized in recent years also obtains a certain curative effect clinically. At present, the percutaneous pedicle screw system mainly adopts a hollow pedicle screw, the length and the radian of a rod need to be preset, and the device is complex in design and inconvenient to use.
The chinese utility model patent with publication number CN202263044U discloses a percutaneous minimally invasive pedicle screw and rod internal fixation system, which comprises pedicle screws, longitudinal connecting rods, a positioning trocar and a guide pin for determining the position of the screw, an expanding core for expanding the screw channel, a screw guide sleeve, a screw feeding device, a rod holding device, a spreading pressurizer, a arm folding device for folding the long arm of the pedicle screw, and a screw feeding seat; the pedicle screw comprises a screw body, a screw seat, two breakable long arms and a screw plug, wherein the screw body is connected with the screw seat, the two breakable long arms are oppositely and fixedly connected to the screw seat to form a U-shaped structure and used for being embedded into a longitudinal connecting rod, the two breakable long arms extend out of a skin incision, and the screw plug is used for screwing the two breakable long arms into the U-shaped structure to compress the longitudinal connecting rod. Above-mentioned technical scheme compresses tightly the unable nimble adjustment of the length of indulging the stick, and the unable real-time supervision lumbar vertebrae part simultaneously receives and draws pressure, and then the patient has probably to lead to the secondary injury in daily life to thereby the doctor also can not real-time supervision patient's waist atress data cause inconvenience to further diagnosis.
Disclosure of Invention
The invention aims to provide an intervertebral space elastic distraction device for monitoring tension and pressure in real time aiming at the defects in the prior art, which can provide continuous and stable traction force, widen the intervertebral space, provide a stable environment for the recovery of lumbar vertebrae and detect the stress condition of the human spine in real time.
The purpose of the invention is realized by the following technical scheme:
an intervertebral space elastic distraction device for monitoring tension and pressure in real time comprises a pedicle screw, an elastic element, a mandrel and a monitoring device; the pedicle screw is provided with a breakable long arm for embedding an elastic element; the monitoring device comprises a core shaft, an elastic element, a monitoring device and a monitoring device, wherein the elastic element is sleeved on the core shaft, one end of the core shaft is provided with a U-shaped support, the monitoring device is provided with a mounting base, the mounting base is provided with a mounting hole corresponding to the U-shaped support, the mounting base drives the monitoring device to move on the U-shaped support, and the monitoring device is connected with the core shaft through a transmission device; the monitoring device is sleeved on the U-shaped support through the mounting base and is connected with the elastic element through the connecting rod, the connecting rod penetrates through the elastic element and the mounting base, one end of the connecting rod is connected with the pedicle screw, and the U-shaped base used for fixing the elastic element is arranged on the connecting rod.
Furthermore, the inner surface of the breakable long arm is provided with internal threads, and one end of the breakable long arm close to the nail seat is provided with a concave notch.
Further, the monitoring device 8 is a sensor, and a data transmission module and a battery module are connected to the sensor.
Furthermore, the sensor is provided with a pressure sensitive element formed by connecting 4 pressure sensitive resistors into a Wheatstone bridge.
Further, when the sensor detects stress, the sensor converts mechanical signals into measurable electrical signals and transmits the electrical signals to the mobile terminal through the data transmission module, and the data transmission module is a Bluetooth module.
Further, the transmission device is a conduction spring.
Further, the mandrel, the elastic element and the mounting base are connected through a connecting rod.
Furthermore, through holes used for being matched with the connecting rod are respectively formed in the mandrel, the elastic element and the mounting base.
Further, the mounting holes on the mounting base are two semicircular openings which are symmetrically distributed.
Furthermore, a cap is sleeved on one end, close to the concave notch, of the breakable long arm, and a cap holding hole is formed in the cap.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides continuous and stable traction force through the elastic element, widens the intervertebral space, provides a stable environment for the recovery of the lumbar vertebra, and accurately grasps the traction force through the stretching and shortening of the length of the elastic element; meanwhile, the mandrel can maintain constant intervertebral height, avoid the acting force deviation of the elastic element, maintain the elastic element in the elastic limit, and prevent the elastic element from generating hypoelasticity and even fatigue fracture due to long-term stress.
The stress condition of the elastic rod is monitored by the monitoring device, so that the stress condition of the human vertebra is monitored in real time, a doctor and a patient can conveniently work on the intervertebral space elastic distraction internal fixation system, the biomechanical rehabilitation condition of the vertebra is mastered in real time, and the rehabilitation of the patient suffering from lumbar diseases is facilitated.
Drawings
Figure 1 is a structural schematic view of a pedicle screw,
FIG. 2 is a schematic view of the monitoring device,
figure 3 is a top view of the monitoring device,
figure 4 is a side view of the monitoring device,
figure 5 is a schematic view of the structure of the elastic element,
figure 6 is a schematic view of the structure of the mandrel,
figure 7 is a schematic view of the mandrel in combination with a monitoring device,
figure 8 is a schematic view of the structure of the connecting rod,
figure 9 is a schematic view of the structure of a hollow plug screw,
figure 10 is a cross-sectional view of a hollow plug screw,
figure 11 is a schematic structural view of a pedicle screw and an elastic element,
fig. 12 is a schematic view of the nut.
The automatic nail comprises a nail body 1, a nail seat 2, an internal thread 3, a breakable long arm 4, an external thread 5, a concave cutting mark 6, a mounting hole 7, a monitoring device 8, a through hole on the mounting base 9, a mounting base 10, an elastic element 11, a rear through hole 12, a front through hole 13, a rear through hole 14, a mandrel 15, a U-shaped support 16, a mandrel arm 17, a mandrel internal thread 18, a plug screw thread 19, a plug screw 20, a transmission device 21, a sensor 22, a connecting thread 23, a U-shaped base 24, a connecting rod 25, a U-shaped groove 26, a hollow plug screw 27, a cap holding hole on the hollow plug screw 28, a hollow plug screw thread 29, a cap 30 and a cap holding hole 31.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 12, the present embodiment provides an intervertebral space elastic distraction device for monitoring tension and compression force in real time, which includes a pedicle screw, an elastic element 11, a mandrel 15 and a monitoring device 8. The pedicle screw comprises a screw body 1, a screw seat 2, a breakable long arm 4 and a hollow screw plug 27, wherein the screw body 1 is connected with the screw seat 2, the upper end of the hollow screw plug is connected with the screw body 1, the lower end of the hollow screw plug 27 is connected with an elastic element 11, the inner surface of the breakable long arm 4 is provided with an internal thread 3 matched with the hollow screw plug 27, and the outer side of the breakable long arm is provided with an external thread 5 matched with the internal thread of a cap 30. A concave notch 6 is arranged at one end of the breakable long arm 4 close to the nail seat 2, so that accurate and rapid cutting can be conveniently carried out in the operation process; the nut is sleeved at one end, close to the concave notch 6, of the breakable long arm 4, can prevent the screw plug from sliding out, guarantees are provided for stability of the assembly, the nut is provided with a cap holding hole 31, and the hollow screw plug is provided with a corresponding cap holding hole 28. The breakable long arms 4 are oppositely and fixedly connected to the nail seat 2 and are used for embedding the elastic elements 11.
The elastic element 11 in this embodiment comprises a front end, an elastic part and a rear end which are connected in sequence, the elastic element 11 is made of titanium alloy material and has good biocompatibility, and the elastic part is in a spring shape and can be stretched or shortened, so that continuous and stable traction force is provided, and the intervertebral space is widened. The elastic element 11 is sleeved on the mandrel 15, the constant intervertebral height is maintained through the mandrel 15, the acting force deviation of the elastic element 11 is avoided, the elastic element 11 is maintained within the elastic limit, and the elastic element 11 is prevented from generating elastic reduction and even fatigue fracture due to long-term stress. A U-shaped support 16 is arranged at one end of the mandrel 15, the U-shaped support is composed of two mandrel arms 17, a mounting base 10 is arranged on the monitoring device 8, and a mounting hole 7 corresponding to the U-shaped support 16 is formed in the mounting base 10; the mounting hole 7 in this embodiment is two semicircular openings that are symmetrically distributed, and is matched with the U-shaped support 16, so that the mounting base 10 and the monitoring device 8 are relatively fixed on the mandrel 15, and the mounting base 10 drives the monitoring device 8 to move back and forth on the U-shaped support 16, the plug screw 20 is mounted at the opening end of the U-shaped support 16, the mounting base 10 is limited, and the mandrel is provided with an internal thread 18 matched with the plug screw thread 19. Monitoring devices 8 are established on U type support 16 through installation base 10 cover to be connected with elastic element 11 through connecting rod 25, connecting rod 25 runs through elastic element 11 and installation base 10, connecting rod 25 one end is equipped with connecting thread 23 and is connected with the cavity plug screw 27 on the pedicle screw, be equipped with cavity plug screw internal thread 29 on the cavity plug screw and cooperate with connecting thread 23, be equipped with the U type base 24 that is used for fixed elastic element 11 on the connecting rod 25, be equipped with U type groove 26 on the U type base 24, U type groove 26 radian cooperatees with elastic element 11.
In this embodiment, the monitoring device 8 is connected to the mandrel 15 through the transmission device 21, the transmission device 21 can transmit the force applied to the elastic element 11 to the monitoring device 8, and the tension and compression force can be measured through the tension and compression of the transmission device 21. Specifically, the monitoring device 8 in this embodiment is a sensor 22, the transmission device 21 is a conductive spring, and the sensor 22 is connected with a data transmission module and a battery module. The sensor 22 is provided with a pressure sensitive element formed by connecting 4 pressure sensitive resistors into a Wheatstone bridge, the transmission device 21 transmits the force applied to the elastic element 11 to the sensor 22, and the sensor 22 converts the mechanical signal into a measurable electrical signal when detecting the stress and transmits the electrical signal to the mobile terminal through the data transmission module. In this embodiment, the data transmission module is a bluetooth module. In order to further improve stress detection effect, this application accessible mobile terminal predetermines stress range value, carries out the early warning when the atress condition exceedes predetermined range value, makes things convenient for medical personnel in time to change the clearance elasticity and struts internal fixation device, improves the treatment to lumbar vertebrae disease.
Example 2
The embodiment provides an intervertebral space elastic distraction device for monitoring tension and pressure in real time, which comprises a pedicle screw, an elastic element 11, a mandrel 15 and a monitoring device 8. The pedicle screw comprises a screw body 1, a screw seat 2, a breakable long arm 4 and a hollow screw plug, wherein the screw body 1 is connected with the screw seat 2, the upper end of the hollow screw plug is connected with the screw body 1, the lower end of the hollow screw plug is connected with an elastic element 11, the inner surface of the breakable long arm 4 is provided with an internal thread matched with the hollow screw plug, and the outer side of the breakable long arm is provided with an external thread matched with the internal thread of the cap 30. A concave notch 6 is arranged at one end of the breakable long arm 4 close to the nail seat 2, so that accurate and rapid cutting can be conveniently carried out in the operation process; the nut is sleeved at one end, close to the concave notch 6, of the breakable long arm 4, can prevent the screw plug from sliding out, guarantees are provided for stability of the assembly, the nut is provided with a cap holding hole 31, and the hollow screw plug is provided with a corresponding cap holding hole 28. The breakable long arms 4 are oppositely and fixedly connected to the nail seat 2 and are used for embedding the elastic elements 11.
The elastic element 11 in this embodiment comprises a front end, an elastic part and a rear end which are connected in sequence, the elastic element 11 is made of titanium alloy material and has good biocompatibility, and the elastic part is in a spring shape and can be stretched or shortened, so that continuous and stable traction force is provided, and the intervertebral space is widened. The elastic element 11 is sleeved on the mandrel 15, the constant intervertebral height is maintained through the mandrel 15, the acting force deviation of the elastic element 11 is avoided, the elastic element 11 is maintained within the elastic limit, and the elastic element 11 is prevented from generating elastic reduction and even fatigue fracture due to long-term stress. A U-shaped support is arranged at one end of the mandrel 15 and consists of two mandrel arms 17, a mounting base 10 is arranged on the monitoring device 8, and a mounting hole 7 corresponding to the U-shaped support 16 is formed in the mounting base 10; the mounting hole 7 in this embodiment is two semicircular openings that are symmetrically distributed, and is matched with the U-shaped support 16, so that the mounting base 10 and the monitoring device 8 are relatively fixed on the mandrel 15, and the mounting base 10 drives the monitoring device 8 to move back and forth on the U-shaped support 16, the plug screw 20 is mounted at the opening end of the U-shaped support 16, the mounting base 10 is limited, and the mandrel is provided with an internal thread 18 matched with the plug screw thread 19. The monitoring device 8 is sleeved on the U-shaped support 16 through the mounting base 10 and is connected with the elastic element 11 through the connecting rod 25, the connecting rod 25 penetrates through the elastic element 11 and the mounting base 10, one end of the connecting rod 25 is provided with a connecting thread 23 to be connected with a hollow screw plug 27 on the pedicle screw, a hollow screw plug internal thread 29 is arranged on the hollow screw plug to be matched with the connecting thread 23, a U-shaped base 24 for fixing the elastic element 11 is arranged on the connecting rod 25, a U-shaped groove 26 is arranged on the U-shaped base 24, and the radian of the U-shaped groove 26 is matched with that of the elastic element 11.
In this embodiment, the mandrel 15, the elastic element 11 and the mounting base 10 are connected by a connecting rod, and through holes for matching with the connecting rod are respectively arranged on the mandrel 15, the elastic element 11 and the mounting base 10. Wherein, the front end and the rear end on the elastic element 11 are respectively provided with a through hole, the inner diameter of the front end is larger than that of the rear end, and the monitoring device 8 is wrapped by the front end of the elastic element 11 to play roles of protection and fixation. The through hole 13 at the front end of the elastic element 11 is aligned with the through hole 9 on the mounting base so as to ensure that the sensor 22 and the elastic element 11 can be fixed when the connecting rod is inserted, and further the real-time pressure can be measured; the rear end through hole 14 of the elastic element 11 corresponds to the through hole on the mandrel 15, and the elastic element 11 and the mandrel 15 are kept fixed by penetrating the through hole through the connecting rod.
In this embodiment, the monitoring device 8 is connected to the mandrel 15 through the transmission device 21, the transmission device 21 can transmit the force applied to the elastic element 11 to the monitoring device 8, and the tension and compression force can be measured through the tension and compression of the transmission device 21. Specifically, the monitoring device 8 in this embodiment is a sensor 22, the transmission device 21 is a conductive spring, and the sensor 22 is connected with a data transmission module and a battery module. The sensor 22 is provided with a pressure sensitive element formed by connecting 4 pressure sensitive resistors into a Wheatstone bridge, the transmission device 21 transmits the force applied to the elastic element 11 to the sensor 22, and the sensor 22 converts the mechanical signal into a measurable electrical signal when detecting the stress and transmits the electrical signal to the mobile terminal through the data transmission module. In this embodiment, the data transmission module is a bluetooth module. In order to further improve stress detection effect, this application accessible mobile terminal predetermines stress range value, carries out the early warning when the atress condition surpasss predetermined range value, makes things convenient for medical personnel in time to change clearance elasticity and struts internal fixation device, improves the treatment to lumbar vertebrae disease.
Example 3
The embodiment provides an intervertebral space elastic distraction device for monitoring tension and pressure in real time, which comprises a pedicle screw, an elastic element 11, a mandrel 15 and a monitoring device 8. The pedicle screw comprises a screw body 1, a screw seat 2, a breakable long arm 4 and a hollow screw plug, wherein the screw body 1 is connected with the screw seat 2, the upper end of the hollow screw plug is connected with the screw body 1, the lower end of the hollow screw plug is connected with an elastic element 11, the inner surface of the breakable long arm 4 is provided with an internal thread matched with the hollow screw plug, and the outer side of the breakable long arm is provided with an external thread matched with the internal thread of the cap 30. A concave notch 6 is arranged at one end of the breakable long arm 4 close to the nail seat 2, so that accurate and rapid cutting can be conveniently carried out in the operation process; the nut is sleeved at one end, close to the concave notch 6, of the breakable long arm 4, can prevent the screw plug from sliding out, guarantees are provided for stability of the assembly, the nut is provided with a cap holding hole 31, and the hollow screw plug is provided with a corresponding cap holding hole 28. The breakable long arms 4 are oppositely and fixedly connected to the nail seat 2 and are used for embedding the elastic elements 11.
The elastic element 11 in this embodiment comprises a front end, an elastic part and a rear end which are connected in sequence, the elastic element 11 is made of titanium alloy material and has good biocompatibility, and the elastic part is in a spring shape and can be stretched or shortened, so that continuous and stable traction force is provided, and the intervertebral space is widened. The elastic element 11 is sleeved on the mandrel 15, the constant intervertebral height is maintained through the mandrel 15, the acting force deviation of the elastic element 11 is avoided, the elastic element 11 is maintained within the elastic limit, and the elastic element 11 is prevented from generating elastic reduction and even fatigue fracture due to long-term stress. A U-shaped support is arranged at one end of the mandrel 15 and consists of two mandrel arms 17, a mounting base 10 is arranged on the monitoring device 8, and a mounting hole 7 corresponding to the U-shaped support 16 is formed in the mounting base 10; the mounting hole 7 in this embodiment is two semicircular openings that are symmetrically distributed, and is matched with the U-shaped support 16, so that the mounting base 10 and the monitoring device 8 are relatively fixed on the mandrel 15, and the mounting base 10 drives the monitoring device 8 to move back and forth on the U-shaped support 16, the plug screw 20 is mounted at the opening end of the U-shaped support 16, the mounting base 10 is limited, and the mandrel is provided with an internal thread 18 matched with the plug screw thread 19. Monitoring devices 8 establish on U type support 16 through installation base 10 cover to be connected with elastic element 11 through connecting rod 25, connecting rod 25 runs through elastic element 11 and installation base 10, connecting rod 25 one end has connecting thread 23 to be connected with the cavity plug screw 27 on the pedicle screw, be equipped with cavity plug screw internal thread 29 on the cavity plug screw and cooperate with connecting thread 23, be connected with the pedicle screw, be equipped with the U type base 24 that is used for fixed elastic element 11 on the connecting rod 25, be equipped with U type groove 26 on the U type base 24, U type groove 26 radian cooperatees with elastic element 11. In this embodiment, the mandrel 15, the elastic element 11 and the mounting base 10 are connected by a connecting rod, and through holes for matching with the connecting rod are respectively arranged on the mandrel 15, the elastic element 11 and the mounting base 10. Wherein, the front end and the rear end on the elastic element 11 are respectively provided with a through hole, the inner diameter of the front end is larger than that of the rear end, and the monitoring device 8 is wrapped by the front end of the elastic element 11 to play roles of protection and fixation. The through hole 13 at the front end of the elastic element 11 is aligned with the through hole 9 on the mounting base so as to ensure that the sensor 22 and the elastic element 11 can be fixed when the connecting rod is inserted, and further the real-time pressure can be measured; the rear end through hole 14 of the elastic element 11 corresponds to the through hole 9 on the mandrel 15, and the elastic element 11 and the mandrel 15 are kept fixed by penetrating the through hole 9 through the connecting rod.
In this embodiment, the monitoring device 8 is connected to the mandrel 15 through the transmission device 21, the transmission device 21 can transmit the force applied to the elastic element 11 to the monitoring device 8, and the tension and compression force can be measured through the tension and compression of the transmission device 21. Specifically, the monitoring device 8 in this embodiment is a sensor 22, the transmission device 21 is a conductive spring, and the sensor 22 is connected with a data transmission module and a battery module. The sensor 22 is provided with a pressure sensitive element formed by connecting 4 pressure sensitive resistors into a Wheatstone bridge, the transmission device 21 transmits the force applied to the elastic element 11 to the sensor 22, and the sensor 22 converts the mechanical signal into a measurable electrical signal when detecting the stress and transmits the electrical signal to the mobile terminal through the data transmission module. In this embodiment, the data transmission module is a bluetooth module. In order to further improve stress detection effect, this application accessible mobile terminal predetermines stress range value, carries out the early warning when the atress condition surpasss predetermined range value, makes things convenient for medical personnel in time to change clearance elasticity and struts internal fixation device, improves the treatment to lumbar vertebrae disease.
The detection process of the intervertebral space elastic distraction device for monitoring the tension and pressure in real time provided by the embodiment is as follows:
when the elastic element 11 is stretched or extruded by human skeleton, the elastic element 11 can be stretched or compressed along with the elastic element, the force applied to the elastic element 11 is transmitted to four pressure-sensitive resistors capable of sensing mechanical signals in the sensor 22 through the transmission device 21, the mechanical signals are converted into measurable electrical signals, the stress condition of the elastic element 11 is detected, finally, the sensing signals are transmitted to an external mobile terminal through a Bluetooth module embedded in the sensor 22, the stress condition of the intelligent intervertebral space elastic distraction internal fixation system is monitored in real time, the real-time detection of the stress condition of the human spine is achieved, the working condition of the intervertebral space elastic distraction internal fixation system can be conveniently mastered by doctors and patients in real time, and the spinal biomechanical rehabilitation condition can be mastered in real time.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Claims (10)
1. An intervertebral space elastic distraction device for monitoring tension and pressure in real time is characterized by comprising a pedicle screw, an elastic element, a mandrel and a monitoring device; the pedicle screw is provided with a breakable long arm for embedding an elastic element; the monitoring device comprises a core shaft, an elastic element, a monitoring device and a monitoring device, wherein the elastic element is sleeved on the core shaft, one end of the core shaft is provided with a U-shaped support, the monitoring device is provided with a mounting base, the mounting base is provided with a mounting hole corresponding to the U-shaped support, the mounting base drives the monitoring device to move on the U-shaped support, and the monitoring device is connected with the core shaft through a transmission device; the monitoring device is sleeved on the U-shaped support through the mounting base and is connected with the elastic element through the connecting rod, the connecting rod penetrates through the elastic element and the mounting base, one end of the connecting rod is connected with the pedicle screw, and the U-shaped base used for fixing the elastic element is arranged on the connecting rod.
2. The intervertebral space elastic distraction device capable of monitoring the tension and pressure in real time as claimed in claim 1, wherein the pedicle screw comprises a screw body, a screw seat, a breakable long arm and a hollow screw plug, the screw body is connected with the screw seat, the upper end of the hollow screw plug is connected with the screw body, the lower end of the hollow screw plug is connected with the elastic rod, the inner surface of the breakable long arm is provided with internal threads, and a concave notch is arranged at one end of the breakable long arm close to the screw seat.
3. The intervertebral space elastic distraction device capable of monitoring the tension and pressure in real time as claimed in claim 1, wherein the monitoring device 8 is a sensor, and a data transmission module and a battery module are connected to the sensor.
4. The device for elastically distracting an intervertebral space according to claim 3, wherein the sensor has a pressure sensor comprising 4 pressure-sensing resistors connected in a Wheatstone bridge.
5. The elastic distraction device for intervertebral space capable of monitoring tension and pressure in real time according to claim 3, wherein the sensor converts mechanical signals into measurable electrical signals when detecting stress, and transmits the electrical signals to the mobile terminal through the data transmission module, and the data transmission module is a Bluetooth module.
6. The device for elastically distracting an intervertebral space with real-time tension and compression monitoring as claimed in claim 1, wherein the transmission device is a conductive spring.
7. The tension-pressure real-time monitoring intervertebral space elastic distraction device according to claim 1, wherein the mandrel, the elastic element and the mounting base are connected through a connecting rod.
8. The elastic distraction device for intervertebral space with real-time tension and pressure monitoring of claim 7, wherein the mandrel, the elastic element and the mounting base are respectively provided with a through hole for matching with the connecting rod.
9. The elastic distraction device for intervertebral space with real-time tension and pressure monitoring of claim 1, wherein the mounting holes on the mounting base are two symmetrically distributed semicircular openings.
10. The elastic distraction device for intervertebral space with real-time tension and pressure monitoring of claim 2, wherein a nut is sleeved on one end of the breakable long arm close to the concave incised track, and a cap holding hole is arranged on the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435647.1A CN114848115A (en) | 2022-04-24 | 2022-04-24 | Intervertebral space elastic distraction device capable of monitoring tension and pressure in real time |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435647.1A CN114848115A (en) | 2022-04-24 | 2022-04-24 | Intervertebral space elastic distraction device capable of monitoring tension and pressure in real time |
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| Publication Number | Publication Date |
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| CN114848115A true CN114848115A (en) | 2022-08-05 |
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| CN202210435647.1A Pending CN114848115A (en) | 2022-04-24 | 2022-04-24 | Intervertebral space elastic distraction device capable of monitoring tension and pressure in real time |
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| Country | Link |
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| CN (1) | CN114848115A (en) |
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