Multipurpose nerve monitoring retractor
By designing a multi-purpose nerve monitoring retractor that integrates nerve retractor and nerve monitoring functions, the problems of cumbersome operation and high cost in existing technologies are solved, achieving efficient nerve monitoring and traction combined, and improving surgical efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2026-03-17
AI Technical Summary
Existing nerve monitoring devices require the simultaneous use of nerve monitoring probes and nerve retractors during surgery, which makes the operation cumbersome, increases costs, and affects surgical efficiency.
A multi-purpose nerve monitoring retractor was designed, integrating nerve retractor and nerve monitoring functions. It is connected to a nerve detector via wires, and can output stimulation current while pulling anatomical nerves to monitor nerve function and prevent damage.
This approach achieves a close integration of nerve monitoring and traction, improving surgical efficiency, reducing operational complexity and costs, and preventing nerve damage.
Smart Images
Figure CN223994925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a multi-purpose nerve monitoring retractor. Background Technology
[0002] Intraoperative Neural Monitoring (IONM) is a technique that monitors nerve function in real time during surgery. It aims to help surgeons identify nerve structures, protect nerve function, and reduce surgical complications such as nerve damage.
[0003] During surgery, surgeons frequently use neuromonitoring techniques to monitor nerve activity. For example, in brain tumor resection surgery, neuromonitoring helps surgeons identify and protect surrounding cranial nerves, such as the optic nerve and facial nerve. For instance, when removing a tumor in the sellar region, monitoring the electrophysiological signals of the optic nerve helps avoid surgical damage and reduces the risk of postoperative visual impairment. In ear surgeries, such as acoustic neuroma resection, neuromonitoring helps protect the auditory nerve. By monitoring the electrophysiological signals of the auditory nerve, surgeons can more precisely remove the tumor while preserving the auditory nerve's function to the greatest extent possible, increasing the likelihood of postoperative hearing loss.
[0004] Existing nerve monitoring devices require alternating use of nerve monitoring probes and nerve retractors. This can affect the surgeon's concentration during surgery and also increases costs due to the need to purchase two different instruments. For example, in thyroid-related surgeries, the dissection of the recurrent laryngeal nerve requires the separate use of nerve monitoring probes and nerve retractors to ensure that the nerve is not damaged during the procedure, but this process is cumbersome.
[0005] The inventors have provided a multi-purpose nerve monitoring retractor for the nerve monitoring instrument (Medtronic NIM3.0 model) used in clinical practice. The multi-purpose nerve monitoring retractor can not only replace the nerve retractor to help pull and dissect nerves, but also play a role in continuously outputting stimulation current, thereby monitoring nerve function, preventing functional damage to nerves during traction and dissection, and improving surgical efficiency. Utility Model Content
[0006] This invention provides a multi-purpose nerve monitoring retractor, comprising a locking and fixing part 1, a handheld part 2, a connecting part 3, and a U-shaped retractor 4. The locking and fixing part 1, handheld part 2, connecting part 3, and U-shaped retractor 4 are sequentially connected and integrally formed. The locking and fixing part 1, handheld part 2, connecting part 3, and U-shaped retractor 4 are hollow and contain a wire 5. The wire 5 is connected to a nerve detector through a wire connecting part 6. The front end of the U-shaped retractor 4 is provided with an opening 8, and the wire 5 is placed outside the opening 8 to release current. When contacting the recurrent laryngeal nerve, the stimulation current emitted by the nerve monitor can be continuously conducted to the nerve trunk, causing nerve contraction and movement. This is converted into an electrical signal by a special endotracheal intubation sensor and transmitted to the monitoring instrument as a related waveform and sound alert. The U-shaped retractor 4 can also play a traction role, allowing doctors to see continuous nerve responses during surgery and adjust the traction force of the nerve in a timely manner. Furthermore, the U-shaped retractor 4 can maintain a relatively stable state for a long time, so it can receive continuous signal feedback when releasing current. This allows doctors to see continuous nerve responses during surgery and adjust the traction force of the nerve in a timely manner. This close integration of nerve traction and nerve monitoring makes it more convenient to use.
[0007] Preferably, the fitting and fixing part 1, the handheld part 2, the connecting part 3 and the U-shaped hook 4 are all made of insulating material or coated with insulating material on the outside to avoid accidental conduction.
[0008] Preferably, both the conductor 5 and the conductor connection part 6 are copper wires, which facilitates electrical conductivity.
[0009] Preferably, the included angle inside the U-shaped hook 4 is 90-150°.
[0010] Preferably, the included angle inside the U-shaped hook 4 is 120°, and a better angle makes it easier to pull.
[0011] Preferably, the fitting and fixing part 1 is composed of a first fixing part 101, a second fixing part 102, a third fixing part 103, a fourth fixing part 104, and a fifth fixing part 105. The first fixing part 101 is 8.5 mm long and 3 mm wide; the second fixing part 102 is 6 mm long and 4 mm wide; the third fixing part 103 is 1 mm long and 5 mm wide; the fourth fixing part 104 is 2 mm long and 2 mm wide; and the fifth fixing part 105 is 1 mm long and 5 mm wide. The fitting and fixing part 1 can be fully matched with existing nerve monitoring devices.
[0012] Preferably, the outer side of the handheld part 2 is provided with a handprint 7 for easy gripping.
[0013] Preferably, the handheld part 2 is 60mm long and 2mm wide.
[0014] Preferably, the connecting part 3 is 19mm long and 1mm wide, and the included angle between the handheld part 2 and the connecting part 3 is 120°.
[0015] Preferably, the opening 8 is 2mm long and 2mm wide.
[0016] The beneficial effects of this utility model are: This utility model provides a multi-purpose nerve monitoring retractor, which can not only replace the nerve retractor to help pull and dissect nerves, but also play a role in continuously outputting stimulation current, thereby playing a role in monitoring nerve function, preventing functional damage to nerves during traction and dissection, and improving surgical efficiency. Attached Figure Description
[0017] Figure 1 A multi-purpose neural monitoring retractor is shown in the following figure: 1. Fitting and fixing part; 2. Handhold part; 3. Connecting part; 4. U-shaped retractor; 5. Wire; 6. Wire connecting part; 7. Handhold; 8. Opening.
[0018] Figure 2 Design drawing of a multi-purpose neural monitoring retractor
[0019] Figure 3 U-shaped hook 4 diagram
[0020] Figure 4 Handheld seal 7 diagram
[0021] Figure 5 Schematic diagram of fitting and fixing part 1 Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings.
[0023] like Figure 1-5As shown, this utility model provides a multi-purpose nerve monitoring retractor. The multi-purpose nerve monitoring retractor includes a locking and fixing part 1, a handheld part 2, a connecting part 3, and a U-shaped retractor 4. The locking and fixing part 1, handheld part 2, connecting part 3, and U-shaped retractor 4 are connected sequentially and integrally formed. The locking and fixing part 1, handheld part 2, connecting part 3, and U-shaped retractor 4 are hollow and have a built-in wire 5. The wire 5 is connected to the nerve detector through the wire connecting part 6. The front end of the U-shaped retractor 4 is provided with an opening 8. The wire 5 is placed outside the opening 8 and can release current. When contacting the recurrent laryngeal nerve, the stimulation current emitted by the nerve monitor can be continuously conducted to the nerve trunk, causing nerve contraction and movement. This is converted into an electrical signal by a special endotracheal intubation sensor and transmitted to the monitoring instrument as a related waveform and sound reminder. The U-shaped retractor 4 can also play a traction role, making it convenient for doctors to see the continuous nerve response during surgery so as to adjust the traction force of the nerve in time. Furthermore, the U-shaped retractor 4 can maintain a relatively stable state for a long time, so it can receive continuous signal feedback when releasing current, allowing doctors to see continuous nerve responses during surgery and adjust the traction force of the nerve in a timely manner. This close integration of nerve traction and nerve monitoring makes it more convenient to use. The fitting and fixing part 1, the handle part 2, the connecting part 3, and the U-shaped retractor 4 are all made of insulating material or coated with insulating material on the outside to prevent accidental conductivity. The wire 5 and the wire connecting part 6 are both copper wires for easy conductivity. The included angle inside the U-shaped retractor 4 is 120°, and the better angle facilitates traction. The fitting and fixing part 1 consists of a first fixing part 101, a second fixing part 102, a third fixing part 103, a fourth fixing part 104, and a fifth fixing part 105. The first fixing part 101 is 8.5 mm long and 3 mm wide; the second fixing part 102 is 6 mm long and 4 mm wide; the third fixing part 103 is 1 mm long and 5 mm wide; the fourth fixing part 104 is 2 mm long and 2 mm wide; and the fifth fixing part 105 is 1 mm long and 5 mm wide. The fitting and fixing part 1 can be fully matched with existing nerve monitoring devices. The handheld part 2 has a handprint 7 on its outer side for easy gripping. The handheld part 2 is 60 mm long and 2 mm wide. The connecting part 3 is 19 mm long and 1 mm wide, and the included angle at the connection between the handheld part 2 and the connecting part 3 is 120°. The opening 8 is 2 mm long and 2 mm wide.
[0024] Preparation method 1: A multi-purpose nerve monitoring hook is prepared by 3D printing technology. First, the inner conductive layer is printed out as a whole. Then, an insulating varnish is applied to the outermost layer to prevent it from touching other nerve tissues and causing inaccurate results. This method is convenient, fast, and can be formed in one step while controlling costs. It can also be made into a disposable product.
[0025] Preparation method 2: First, make the internal conductive metal part, and then wrap it with non-toxic, high-temperature resistant medical-grade PP plastic on the outside. The advantage of this method is that it can be reused after sterilization.
[0026] In summary, this utility model provides a multi-purpose nerve monitoring retractor. This multi-purpose nerve monitoring retractor can not only replace a nerve retractor to help pull and dissect nerves, but also continuously output stimulation current, thereby monitoring nerve function, preventing functional damage to nerves during traction and dissection, and improving surgical efficiency.
[0027] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A multi-purpose neuro-monitoring retractor, comprising: The multipurpose nerve monitoring hook comprises a chimeric fixing part (1), a handheld part (2), a connecting part (3) and a U-shaped hook (4), the chimeric fixing part (1), the handheld part (2), the connecting part (3) and the U-shaped hook (4) are sequentially connected and integrally formed; the chimeric fixing part (1), the handheld part (2), the connecting part (3) and the U-shaped hook (4) are hollow and internally provided with wires (5), the wires (5) are connected with a nerve detector through wire connecting parts (6), the U-shaped hook (4) is provided with an opening (8) at the front end, and the wires (5) are externally provided at the opening (8).
2. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The chimeric fixing part (1), the handheld part (2), the connecting part (3) and the U-shaped hook (4) are all prepared from insulating materials or externally coated with insulating materials.
3. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The wires (5) and the wire connecting parts (6) are all copper wires.
4. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The included angle of the U-shaped hook (4) is 90-150°.
5. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The included angle of the U-shaped hook (4) is 120°.
6. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The chimeric fixing part (1) is composed of a first fixing part (101), a second fixing part (102), a third fixing part (103), a fourth fixing part (104) and a fifth fixing part (105), the first fixing part (101) is 8.5mm long and 3mm wide, the second fixing part (102) is 6mm long and 4mm wide, the third fixing part (103) is 1mm long and 5mm wide, the fourth fixing part (104) is 2mm long and 2mm wide, and the fifth fixing part (105) is 1mm long and 5mm wide.
7. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The handheld part (2) is externally provided with a handheld mark (7).
8. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The handheld part (2) is 60mm long and 2mm wide.
9. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The connecting part (3) is 19mm long and 1mm wide, and the included angle of the connecting part (3) and the handheld part (2) is 120°.
10. The multi-purpose neuro-monitoring retractor of claim 1, wherein, The opening (8) is 2mm long and 2mm wide.