hooked probe under mirror

Abstract

This utility model discloses a endoscopic hook knife probe, relating to the field of medical device technology. The endoscopic hook knife probe includes a handle, a rod, and a blade. The two ends of the rod are connected to the handle and the blade, respectively. The connection between the blade and the rod can be configured with a bent structure at an angle between 90° and 120°. The blade includes: a cutting edge disposed on both the inner and outer sides of the bent structure, capable of cutting tissue at the surgical site; and a blunt structure located at the front end of the bent structure, shaped as a smooth hemisphere. This endoscopic hook knife probe can be used in combination with endoscopes and other instruments to perform minimally invasive anterior cervical fusion surgery, filling a technological gap in existing domestic surgical techniques. The endoscopic hook knife probe proposed in this application effectively meets the clinical needs for minimally invasive, visualized, safe, and efficient procedures, significantly improving the ease of operation and surgical efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a endoscopic hook knife probe. Background Technology

[0002] Since its introduction to China in 2000, spinal endoscopy technology has experienced rapid development and widespread adoption. From initially importing and learning from foreign counterparts to now surpassing them, China's spinal endoscopy technology has achieved a leading position in both surgical volume and indications. Currently, most spinal endoscopic surgeries involve coaxial endoscopy of the posterior lumbar, thoracic, and cervical spine. Instruments are inserted through the instrument channel of the endoscope, and surgery is performed under the endoscopic field of vision.

[0003] Currently, endoscopic decompression and fusion surgeries performed via the anterior cervical approach are not common, such as EndoACDF or EndoACCF. Furthermore, in posterior and lateral endoscopic surgeries of the cervical, thoracic, and lumbar spine, the management of the posterior longitudinal ligament typically employs forward-pushing tools such as reamers, scissors, and forward-pushing curettes (the dura mater is posterior, so pushing forward is relatively safe). Lamina bone forceps are a type of backward-pushing tool, but their anterior-hand flexibility is limited. Due to the narrow intervertebral space, the more dangerous and fragile dura mater, and the confined space in the anterior cervical approach, current techniques lack flexible, efficient, and safe surgical tools for managing the posterior longitudinal ligament.

[0004] The lateral flexibility of the laminar bone-biting forceps is not good. Due to the narrow intervertebral space, the more dangerous and fragile dura mater, and the limited space in the anterior cervical approach, there is currently a lack of flexible, efficient and safe surgical tools for the treatment of the posterior longitudinal ligament. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an endoscopic hook knife probe, which solves the problem that existing technologies lack flexible, efficient, and safe surgical tools for treating the posterior longitudinal ligament due to the poor directional flexibility of the front end of the laminar bone-biting forceps and the limited space in the anterior cervical approach, which is caused by narrow intervertebral spaces, more dangerous and fragile nerve dura mater, and limited space.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a microscopic hook knife probe, comprising a handle, a rod, and a blade, wherein the two ends of the rod are connected to the handle and the blade, respectively; a bending structure is provided at the connection between the blade and the rod, the bending structure being selectable to be an included angle of 90° to 120°; the blade comprises:

[0007] The blade is located on both the inner and outer sides of the bending structure of the blade. The bending structure may optionally have conical blades protruding from both sides to the center at the inner and outer corners. The blades are capable of cutting the tissue at the surgical site.

[0008] The blunt structure, located at the front end of the bending structure of the blade, is shaped as a smooth hemisphere. The blunt structure allows for exploration of the surgical site tissue, and the hemispherical blunt structure ensures that damage to the dural sac is avoided when the blade enters the vertebral body to remove the posterior longitudinal ligament.

[0009] Preferably, the handle and the rod are connected by internal and external threads and welding.

[0010] Preferably, the handle and the rod are processed into a single structure by integral injection molding.

[0011] Preferably, the rod is a tapered structure, with the outer diameter of the rod gradually decreasing from the handle to the blade. The length of the rod is sufficient to reach the endoscope or working cannula used in combination. The tapered structure and the sufficiently small outer diameter of the rod help to reduce the occupation of surgical space and increase the field of vision. The lighter weight also helps to reduce the surgical burden on doctors.

[0012] This utility model discloses a microscopic hook knife probe, which has the following beneficial effects:

[0013] 1. This application can be used in combination with instruments such as endoscopes to perform minimally invasive anterior cervical fusion surgery under endoscopy, filling the technical gap in related surgeries in China.

[0014] 2. The endoscopic hook knife probe proposed in this application can effectively meet the clinical needs of minimally invasive, visual, safe and efficient procedures, significantly improve the ease of operation and surgical efficiency of the instrument, and when used in combination with other instruments, it can treat various types of lesions, reduce the learning curve and ensure surgical efficacy.

[0015] 3. The endoscopic hook knife probe proposed in this application can safely and efficiently remove the posterior longitudinal ligament, realizing multiple treatment methods throughout the spinal fusion surgery. The device has high versatility and ease of operation, which helps to reduce surgical risks, improve surgical efficiency and shorten surgical time.

[0016] 4. The endoscopic hook knife probe proposed in this application is beneficial for leveraging the characteristics of each type of surgical procedure, thereby reducing equipment investment and saving patients' surgical costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the blade part of this utility model;

[0020] Figure 3 This is a schematic diagram of the working structure of the hook probe of this utility model.

[0021] In the diagram: 1. Handle; 2. Rod; 3. Blade; 31. Blade edge; 32. Blunt structure. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] This application provides an endoscopic hook knife probe, which solves the problem that existing technologies lack flexible, efficient and safe surgical tools for treating the posterior longitudinal ligament due to the poor directional flexibility of the front end of the laminar bone-biting forceps and the narrow intervertebral space, the more dangerous and fragile nerve dura mater, and the limited space in the anterior cervical spine. This achieves the goal of reducing stimulation to the dura mater, effectively shortening the operation time and alleviating patient pain.

[0024] This utility model discloses a microscopic hook knife probe. Example

[0025] According to the appendix Figure 1-3 As shown, it includes a handle 1, a rod 2, and a blade 3. The two ends of the rod 2 are connected to the handle 1 and the blade 3, respectively. A bending structure is provided at the connection between the blade and the rod. The bending structure can be selected as an angle from 90° to 120°. The blade 3 includes:

[0026] The blade 31 is provided on the inner and outer sides of the bent structure of the blade part 3. The bent structure can optionally be provided with a conical blade 31 that protrudes from both sides to the center at the inner and outer corners. The blade 3 can cut the tissue at the surgical site.

[0027] The blunt structure 32 is located at the front end of the bending structure of the blade part 3. Its shape is set as a smooth hemisphere. The blunt structure 32 can be used to explore the tissue at the surgical site.

[0028] This application enables its use in combination with endoscopes and other instruments for minimally invasive anterior cervical fusion surgery, filling a technological gap in related surgeries in China. The endoscopic hook knife probe proposed in this application effectively meets the clinical needs for minimally invasive, visualized, safe, and efficient procedures, significantly improving the ease of instrument operation and surgical efficiency. When used in combination with other instruments, it can treat various types of lesions, reducing the learning curve and ensuring surgical efficacy. The endoscopic hook knife probe proposed in this application can safely and efficiently remove the posterior longitudinal ligament, enabling multiple treatment methods throughout the spinal fusion surgery. This device has high versatility and ease of operation, helping to reduce surgical risks, improve surgical efficiency, and shorten surgical time. The endoscopic hook knife probe proposed in this application allows for leveraging the characteristics of each type of surgical procedure, correspondingly reducing equipment investment and saving patients surgical costs.

[0029] Furthermore, the handle 1 and the rod 2 are connected by internal and external thread connection and welding.

[0030] Specifically, the handle 1 and the rod 2 are processed into a single structure through an integral injection molding process. Example

[0031] According to the appendix Figure 1-3 As shown, it includes a handle 1, a rod 2, and a blade 3. The two ends of the rod 2 are connected to the handle 1 and the blade 3, respectively. The connection between the blade 3 and the rod 2 can be configured with a bending structure at an angle between 90° and 120°. The blade 3 includes:

[0032] The blade 31 is provided on the inner and outer sides of the bent structure of the blade part 3. The bent structure can optionally be provided with a conical blade 31 that protrudes from both sides to the center at the inner and outer corners. The blade 3 can cut the tissue at the surgical site.

[0033] The blunt structure 32 is located at the front end of the bending structure of the blade part 3. Its shape is set as a smooth hemisphere. The blunt structure 32 can be used to explore the tissue at the surgical site.

[0034] It should be emphasized that the rod 2 has a tapered structure as a whole, and the outer diameter of the rod 2 gradually decreases from the handle 1 to the blade 3.

[0035] Working principle: When using the endoscopic hook knife probe with the above-mentioned structural design in anterior cervical fusion surgery, firstly, a retractor is inserted into the vertebral body to open the intervertebral space;

[0036] Then, insert the working cannula and place the endoscope used for anterior cervical fusion surgery into the inner tube of the working cannula. Observe the lesions in the intervertebral space through the observation window of the working cannula.

[0037] Then, without taking up too much operating space, the lenticular probe is placed into the working sleeve;

[0038] Finally, under direct endoscopic visualization, the doctor uses a endoscopic hook knife probe to treat soft tissues such as the posterior longitudinal ligament. This allows for the exploration of the spinal cord and nerve relaxation, as well as the removal of tissues obstructing the spinal cord and nerves. The probe is then inserted at a rotating angle, where the blade 31 cuts the tissue.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A microscopic hook knife probe, comprising a handle (1), a rod (2), and a blade (3), wherein the two ends of the rod (2) are respectively connected to the handle (1) and the blade (3), characterized in that, A bending structure is provided at the connection between the blade (3) and the rod (2). The bending structure can be selected as an included angle of 90° to 120°. The blade (3) includes: The blade (31) is provided on both the inner and outer sides of the bending structure of the blade part (3); A blunt structure (32) is located at the front end of the bending structure of the blade (3) and is shaped as a smooth hemisphere. The blade (31) combined with the blunt structure (32) can sequentially explore and cut the tissue at the surgical site.

2. The microscopic hook-blade probe according to claim 1, characterized in that, The handle (1) and the rod (2) are connected by internal and external thread connection and welding.

3. The microscopic hook-blade probe according to claim 1, characterized in that, The handle (1) and the rod (2) are processed into an integral structure by an overall injection molding process.

4. The microscopic hook-blade probe according to claim 1, characterized in that, The rod (2) is a tapered structure, and the outer diameter of the rod (2) gradually decreases from the handle (1) to the blade (3).

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