A safe surgical device for minimally invasive spinal procedures

Abstract

The application discloses a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and an electric safety protection sleeve, wherein the handle of the mirror-under power drill and the drill are matched with the electric safety protection sleeve; the handle is connected with the drill, and the drill penetrates through the electric safety protection sleeve. The application provides a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and a safety protection sleeve. When in use, the safety protection sleeve is directly fixed on the surface of the lamina to be removed, the mirror-under power drill can penetrate through the sleeve to complete the mirror-under grinding operation of the lamina, and the real-time lamina removal condition can be clearly seen through the end observation hole, so that the lamina is quickly removed while the nerve root is completely ensured not to be damaged.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a safe surgical device suitable for minimally invasive spinal surgery. Background Technology

[0002] With the increasing clinical application of UBE (unilateral dual-channel endoscopy) in spinal surgery, it has become an important surgical procedure for treating spinal diseases such as lumbar disc herniation and lumbar spinal stenosis due to its advantages such as minimal trauma, clear vision, rapid postoperative recovery, and minimal damage to spinal stability. Various endoscopic surgical instruments adapted to this procedure have also been continuously iterated and developed. Among them, the endoscopic power drill has become a core and commonly used instrument in this type of surgery due to its efficient laminectomy and bone trimming capabilities. It is a key tool for achieving laminectomy and nerve decompression.

[0003] However, due to the limitations of the UBE (Ultra-Body-Eye) endoscopic surgery environment, the laminectomy site is located within the spinal canal, extremely close to the spinal cord and nerve roots. Furthermore, the surgical field is narrow and the field of vision is somewhat limited. During the procedure, factors such as vibrations from the high-speed rotation of the drill, slight tremors in the surgeon's hand, uneven bone hardness, and wear on the burr head can easily cause the drill to slip or deviate, directly damaging the fragile nerve roots and leading to numbness and weakness in the lower limbs. In severe cases, it can even cause irreversible secondary surgical damage such as bowel and bladder dysfunction. This safety hazard not only increases the surgical risk and the incidence of postoperative complications but also leads many clinicians to have significant concerns about the use of endoscopic power drills. Overly cautious operation during surgery reduces efficiency, prolongs the procedure, and limits the widespread application of UBE endoscopic surgery in primary hospitals. Summary of the Invention

[0004] In view of the aforementioned deficiencies in the prior art, the technical problem to be solved by the present invention is that existing spinal surgery using UBE (Ultra-Body Excision) instruments suffers from nerve root damage due to slippage, leading to secondary surgical complications. The present invention provides a safe surgical device suitable for minimally invasive spinal surgery, comprising a endoscopic power drill and a safety protective sleeve. In use, the safety protective sleeve is directly fixed to the surface of the lamina to be removed. The endoscopic power drill passes through the sleeve to perform endoscopic lamina removal. The real-time lamina removal process can be clearly observed through the end viewing port, allowing for rapid lamina removal while completely ensuring that the nerve roots are not damaged.

[0005] To achieve the above objectives, the present invention provides a safe surgical device suitable for minimally invasive spinal surgery, including a endoscopic power drill and an electric safety protective sleeve, wherein the handle and the drill of the endoscopic power drill cooperate with the electric safety protective sleeve;

[0006] The handle is connected to the drill bit, which passes through an electric safety sleeve.

[0007] Furthermore, the safety protection sleeve includes an outer sleeve, an inner sleeve, a telescopic limiting device, an observation hole, and an electric control device; the outer sleeve is connected to the outer wall of the inner sleeve, and the outer sleeve slides with the inner sleeve through the electric control device; the telescopic limiting device is located on the inner wall of the inner sleeve, with one end near the end of the electric safety protection sleeve fixed to the inner wall of the inner sleeve, and the other end connected to the electric control device; the observation hole is located at the end of the electric safety protection sleeve.

[0008] Furthermore, the travel of the telescopic limit device is set to 10mm.

[0009] Furthermore, the electric control device includes a micro stepper motor, a piston, a drive shaft, a slider, a locking nut, and a ball-head connecting rod; the micro stepper motor is connected to the drive shaft, the slider is mounted on the drive shaft, the ball-head connecting rod is fixed to the slider by the locking nut, one side of the slider is connected to the piston, and the other end of the piston is connected to the telescopic limiting device.

[0010] Furthermore, the other end of the ball joint connecting rod is connected to the handle.

[0011] Furthermore, the inner sleeve includes a first part, a second part, and a third part, with the first part connected by the second and third parts, wherein the diameter of the third part is smaller than the diameter of the first part, and the second part is frustum-shaped.

[0012] Furthermore, the handle also includes a groove that mates with the ball joint connecting rod.

[0013] Furthermore, the inner diameter of the third part of the inner sleeve ranges from 9mm to 10mm.

[0014] Furthermore, the maximum outer diameter of the handle is less than or equal to the inner diameter of the outer sleeve.

[0015] Furthermore, the electric safety sleeve is designed to be made of PEEK material.

[0016] Technical effect

[0017] This invention provides a safe surgical device suitable for minimally invasive spinal surgery, comprising a endoscopic powered drill and an electrically powered safety sleeve. Applied to spinal UBE decompression surgery, it can achieve multiple significant technical effects, all of which are realized through the core structural design of the electrically powered safety sleeve and its coordinated operation with the endoscopic powered drill, as detailed below:

[0018] 1. Completely avoids the risk of accidental nerve root injury and improves the safety of surgical procedures: This effect stems from the PEEK material body structure of the electric safety protective sleeve, the 10mm travel telescopic limit device, and the observation hole design. The electric safety protective sleeve is fixed to the surface of the vertebral lamina to define a precise working range for the drill, the telescopic limit device achieves a rigid limit on the cutting depth, and the observation hole allows the doctor to monitor the working status of the drill / grinding head in real time. The three work together to prevent the endoscopic power drill from exceeding the preset range and contacting the nerve root, solving the core pain point of the drill slipping and scratching the nerve root in the existing technology.

[0019] 2. Achieving precise and controllable laminectomy to meet personalized clinical needs: This effect stems from the precise combination of the endoscopic power drill and the electric safety sleeve. The telescopic limiting device in the inner sleeve is tightly fitted with the drill interface (the interface between the handle and the drill). The doctor can easily push the handle to achieve a limited depth of laminectomy. At the same time, the drill makes circular motion within the limited range of the sleeve, which can strictly control the area and depth of laminectomy according to the doctor's plan, adapting to the operational needs of different surgeries.

[0020] 3. Optimize the use of surgical instruments and significantly reduce surgical operation costs: This effect stems from the comprehensive design of the aforementioned safety protection and precise positioning. In existing technologies, to avoid the risk of nerve root damage, most choose to use diamond grinding heads to complete all cutting operations. However, this can easily cause the power system to be overloaded and damaged. This invention, through the protective function of the electric safety sleeve, uses different models and materials of grinding heads according to the original specifications of the power system, avoiding overuse damage to instruments, extending the service life of instruments, and reducing the replacement and maintenance costs of grinding heads and power systems, thus achieving economic efficiency in surgical operations.

[0021] 4. Reduce the operational difficulty of UBE endoscopic surgery and promote the application of the technology in primary hospitals: This effect stems from the dual improvement in the ease of operation and surgical safety of the electric safety sleeve. The assembly and use of the electric safety sleeve is simple, requiring no complicated additional operations, and fundamentally solves the core safety hazards of the surgery, reducing doctors' concerns and technical barriers, allowing primary hospitals to successfully carry out UBE endoscopic laminectomy surgery, and promoting the popularization of minimally invasive spinal technology.

[0022] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a safe surgical device suitable for minimally invasive spinal surgery, according to a preferred embodiment of the present invention.

[0024] Figure 2 This is a split schematic diagram of a safe surgical device suitable for minimally invasive spinal surgery according to a preferred embodiment of the present invention;

[0025] Figure 3 This is a detailed enlarged view of a preferred embodiment of a safe surgical device for minimally invasive spinal surgery according to the present invention;

[0026] Among them, 1-outer sleeve, 2-piston, 3-inner sleeve, 4-telescopic limiting device, 5-grinding drill (grinding head), 6-handle, 7-telescopic limiting device in compressed state, 8-ball joint connecting rod, 9-micro stepper motor, 10-slider, 11-locking nut, 12-drive shaft, 13-observation hole. Detailed Implementation

[0027] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] In the following description, specific details, such as particular internal procedures and techniques, are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will appreciate that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of the invention with unnecessary detail.

[0029] like Figure 1-3 As shown, the present invention provides a safe surgical device suitable for minimally invasive spinal surgery, including a endoscopic power drill and an electric safety protective sleeve, wherein the handle 6 and the drill 5 of the endoscopic power drill cooperate with the electric safety protective sleeve;

[0030] The handle is connected to the drill bit, which passes through an electric safety sleeve.

[0031] Specifically, the safety protection sleeve includes an outer sleeve 1, an inner sleeve 3, a telescopic limiting device 4, an observation hole, and an electric control device; the outer sleeve 1 is connected to the outer wall of the inner sleeve 3, and the outer sleeve 1 slides with the inner sleeve 3 through the electric control device; the telescopic limiting device 4 is set on the inner wall of the inner sleeve 3, with one end near the end of the electric safety protection sleeve fixed to the inner wall of the inner sleeve 3, and the other end connected to the electric control device; the observation hole is set at the end of the electric safety protection sleeve;

[0032] In this embodiment of the invention, the maximum stroke of the telescopic limiting device is set to 10mm. In this embodiment, the telescopic limiting device is a spring, one end of which (the end near the end of the electric safety protection sleeve) is fixed to the inner wall of the inner sleeve, and the other end is an automatically movable end.

[0033] In this embodiment of the invention, the electric control device includes a micro stepper motor 9, a piston 2, a transmission shaft 12, a slider 10, a locking nut 11, and a ball-head connecting rod 8. The micro stepper motor 9 is connected to the transmission shaft 12, the slider 10 is mounted on the transmission shaft 12, the ball-head connecting rod is fixed to the slider by the locking nut, one side of the slider is connected to the piston, and the other end of the piston is connected to the telescopic limiting device. Specifically, in this embodiment of the invention, the micro stepper motor is a micro lead screw stepper motor, the transmission shaft 12 is a lead screw, the slider 10 is fixed to the lead screw, one side of the slider (the side near the end of the safety sleeve) is connected to the piston, and when the micro lead screw stepper motor receives a start command, it starts, the slider moves and drives the grinding assembly forward, thereby moving the grinding head towards the end of the safety sleeve. The other end of the slider is connected to the free end of the ball-head connecting rod, thus compressing the spring through the piston, as shown in Figure 7. The ball joint on the slider connects to the handle, allowing the surgeon to make arc-shaped cuts while simultaneously using the force from the slider on the stepper motor to cut downwards. This ensures the downward cutting force is not excessive and prevents slippage, thus guaranteeing the smooth completion of the endoscopic surgery. Furthermore, the travel settings of the micro-stepper motor and the travel limit of the spring further ensure the depth of the power drill's downward cuts. More specifically, the cutting progress and range of the drill can be observed through the observation hole. When the dura mater is reached, the resistance decreases, and the micro-stepper motor stops working.

[0034] In this embodiment of the invention, the other end of the ball-head connecting rod is connected to the handle. The handle also includes a groove that mates with the ball-head connecting rod.

[0035] like Figure 2 As shown, the inner sleeve includes a first part, a second part, and a third part. The first part is connected to the second and third parts, wherein the diameter of the third part is smaller than the diameter of the first part, and the second part is frustum-shaped. The diameter of the first part is set to control the laminectomy area, and its larger diameter is used to house the electric device and handle, giving the surgeon more operating space during the operation. The second part is a connecting component, ensuring the stability of the electric safety sleeve structure. Furthermore, in this embodiment of the invention, the inner sleeve is integrally formed. The inner diameter of the third part of the inner sleeve ranges from 9mm to 10mm, and the inner diameter of one part ranges from 0.5mm to 1mm.

[0036] In this embodiment of the invention, the maximum outer diameter of the handle is less than or equal to the inner diameter of the outer sleeve, further limiting the depth to which dynamic wear under the lens can be directed downwards.

[0037] The electric safety protection sleeve in this embodiment of the invention is made of PEEK material, which has good biocompatibility and is non-irritating when in contact with human tissue; at the same time, the sleeve wall thickness (0.5mm) is designed to be thin and light; even if the drill comes into contact with the inner wall of the sleeve during high-speed operation, it will not cause damage to the grinding head, and the sleeve body has both hardness and toughness suitable for surgical operations.

[0038] During the surgical procedure, the surgeon secures the drill to the electric safety sleeve, activates the stepper motor control switch, and gently touches the drill handle to initiate a slow and safe cutting of the lamina. The surgeon can observe the grinding head's operation in real time through an observation hole on the sleeve. When the grinding operation reaches the spring's extension limit, the biosafety sleeve and grinding head can be removed. The drill operates only within the designated lamina area, completely eliminating the risk of accidental nerve injury from an operational perspective. The stepper motor advances according to the set time and progress. The spring generates a reaction force when the grinding head advances too quickly, retracting the drill to the un-grounded lamina area, allowing the drill to continue grinding. The surgeon only needs to control the handle to perform irregular grinding. Simultaneously, the stepper motor module automatically receives a signal to stop working when there is no resistance in the drill's forward direction. This allows for rapid lamina removal while completely preventing nerve root damage, precisely meeting clinical requirements for the depth and area of ​​lamina cutting and completely eliminating the risk of secondary nerve root injury from an operational perspective.

[0039] In UBE-guided laminectomy, the structure and limiting design of the biomaterial safety positioning protective sleeve of this invention enable precise control over the laminectomy area and longitudinal depth without damaging the spinal nerve roots. The cutting area is determined by the limited working range of the sleeve, and the drill can only make circular and elliptical movements within the sleeve to complete the cutting, avoiding operation beyond the range. The cutting depth is rigidly limited by a spring telescopic device with an effective stroke of 10mm inside the sleeve. After grinding to the preset depth, it cannot go any deeper. Both of these factors ensure that the area and depth of the laminectomy are within the clinically safe operating range, meeting the treatment requirements of the laminectomy without causing nerve root damage due to excessive cutting.

[0040] Furthermore, it balances the economic benefits of hospital operations and patient treatment, effectively saving costs for both hospitals and patients. This includes cost savings across both hospital operations and patient treatment. For hospitals, existing technologies often rely solely on diamond grinding heads for all cutting operations to avoid nerve root injury, easily leading to overloading and damage to the power system. The safety design of this invention allows hospitals to use different models and materials of grinding heads according to the original power system specifications, preventing instrument overuse damage, extending the lifespan of the power system and grinding heads, and reducing instrument replacement and maintenance costs. For patients, reduced instrument wear and tear lowers the associated costs of surgical instruments. Simultaneously, because this invention avoids the risk of secondary surgery for nerve root injury, it prevents additional treatment and rehabilitation costs due to postoperative complications, achieving dual savings in hospital operating costs and patient treatment costs.

[0041] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A safe surgical device suitable for minimally invasive spinal surgery, comprising a endoscopic power drill, characterized in that, It also includes an electric safety sleeve, wherein the handle and the drill of the microscopic power drill cooperate with the electric safety sleeve; The handle is connected to the drill bit, which passes through the electric safety sleeve.

2. The safe surgical device for minimally invasive spinal surgery as described in claim 1, characterized in that, The safety protection sleeve includes an outer sleeve, an inner sleeve, a telescopic limiting device, an observation hole, and an electric control device; the outer sleeve is connected to the outer wall of the inner sleeve, and the outer sleeve slides with the inner sleeve via the electric control device; the telescopic limiting device is disposed on the inner wall of the inner sleeve, with one end near the end of the electric safety protection sleeve fixed to the inner wall of the inner sleeve, and the other end connected to the electric control device; the observation hole is disposed at the end of the electric safety protection sleeve.

3. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 1, characterized in that, The travel of the telescopic limiting device is set to 10mm.

4. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 1, characterized in that, The electric control device includes a micro stepper motor, a piston, a drive shaft, a slider, a locking nut, and a ball joint connecting rod. The micro stepper motor is connected to the drive shaft, the slider is mounted on the drive shaft, the ball joint connecting rod is fixed to the slider by the locking nut, one side of the slider is connected to the piston, and the other end of the piston is connected to the telescopic limiting device.

5. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 4, characterized in that, The other end of the ball joint connecting rod is connected to the handle.

6. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 1, characterized in that, The inner sleeve includes a first part, a second part, and a third part. The first part is connected to the second part and the third part, wherein the diameter of the third part is smaller than the diameter of the first part, and the second part is frustum-shaped.

7. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 4, characterized in that, The handle also includes a groove that mates with the ball joint connecting rod.

8. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 6, characterized in that, The inner diameter of the third part of the inner sleeve ranges from 9mm to 10mm.

9. A safe surgical device suitable for minimally invasive spinal surgery as described in claim 1, characterized in that, The maximum outer diameter of the handle is less than or equal to the inner diameter of the outer sleeve.

10. A safe surgical device for minimally invasive spinal surgery as described in claim 1, characterized in that, The electric safety protection sleeve is made of PEEK material.

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