Wrist arthroscope cannula
By using a sterile syringe cannula, hook knife, and wrist arthroscopy to perform minimally invasive surgery to release the transverse carpal ligament, the problem of high cost of existing cannula tools is solved, and low-cost, minimally invasive treatment of carpal tunnel syndrome is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 于斌
- Filing Date
- 2025-01-14
- Publication Date
- 2026-04-24
AI Technical Summary
The existing wrist arthroscopic treatment cannula is a disposable consumable, which is costly and results in a heavy economic burden for patients.
Surgical treatment is performed using a sterile syringe cannula, a hook knife, and a wrist arthroscopy. A window and a finger hook plate are opened at the top of the sterile syringe cannula, and the hook knife and wrist arthroscopy body are used to perform minimally invasive surgery to release the transverse carpal ligament.
It reduces the cost of surgical consumables, enables minimally invasive surgery, reduces incision pain and discomfort, avoids accidental damage to important tissues, and has a definite therapeutic effect.
Smart Images
Figure CN224155731U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically a wrist arthroscopy cannula. Background Technology
[0002] Carpal tunnel syndrome is a condition characterized by a series of symptoms and signs caused by compression of the median nerve at the carpal tunnel. It is the most common nerve entrapment disorder reported clinically, primarily affecting individuals aged 30-60. Patients typically complain of numbness and pain in the radial three and a half fingers, which is more pronounced at night and may cause them to wake up due to numbness. Sometimes, thumb abduction is weak, and movement is clumsy. In severe cases, thenar muscle atrophy may occur. To alleviate these symptoms, surgical release of the transverse carpal ligament is often performed to improve function.
[0003] Traditional surgical methods involve making a 3-5cm incision on the palmar side of the wrist. The skin on the palmar side is tough, and the resulting scar can be very uncomfortable, causing pain in the columnar area around the incision. Even after the numbness in the hand is relieved after surgery, patients may still have repeated visits due to discomfort caused by the incision scar. With the advancement of endoscopic technology and the expert guidelines indicating that only the transverse carpal ligament needs to be incised for release, without the need for median nerve epineurium release, the use of wrist arthroscopy for minimally invasive treatment of carpal tunnel syndrome is gradually becoming the trend.
[0004] However, current wrist arthroscopic treatment requires a special cannula, which is expensive and a single-use consumable, not centrally procured, thus imposing a huge economic burden on patients. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a wrist arthroscopy cannula, which solves the problem that the dedicated cannula tools in the prior art are disposable consumables and have high costs.
[0006] A wrist arthroscopic cannula, comprising:
[0007] A sterile syringe cannula, wherein the interior of the sterile syringe cannula has a through hole, the top of the sterile syringe cannula has a skylight, and finger hook plates are symmetrically installed on the periphery of the sterile syringe cannula, with the finger hook plates located on one side of the periphery of the sterile syringe cannula.
[0008] A hook knife, located on the other side of the sterile syringe cannula, with one side of the hook knife extending into the interior of the sterile syringe cannula;
[0009] The wrist arthroscopy body is located on one side of the sterile syringe cannula.
[0010] Preferably, the sterile syringe cannula is made of a syringe with a capacity of 1 mL.
[0011] Preferably, the width of the skylight is 2mm, and the end of the hook extends into the interior of the skylight.
[0012] Preferably, anti-slip blocks are installed on both sides of the finger hook plate, and the anti-slip blocks are provided with anti-slip texture.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This utility model can greatly reduce surgical consumables and treatment costs when using sterile syringe cannulas, hook knives and wrist arthroscopy for surgical treatment. By opening a window at the top of the sterile syringe cannulas, it can provide space for surgical processing.
[0015] 2. This utility model has a definite curative effect on carpal tunnel syndrome by wrist arthroscopy. The surgery is minimally invasive, requiring only two incisions of about 0.5cm each. It will not cause the palmar incision pain and discomfort caused by traditional surgery. Moreover, the transverse carpal ligament is released under the monitoring of wrist arthroscopy, so there will be no incomplete release or accidental damage to adjacent important tissues. The small incisions are sealed with cosmetic sutures or medical adhesive.
[0016] 3. This utility model uses a sterile syringe cannula made of a 1mL syringe. It is hard and, after the top is opened, the window will not close or deform even when the Kirschner wire guide is pulled out during the operation and the window is squeezed by the surrounding soft tissue. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present utility model;
[0018] Figure 2 This is a side view of the present invention;
[0019] Figure 3 This is a top view of the present invention;
[0020] Figure 4 This is a partial cross-sectional view of the sterile syringe cannula of this utility model.
[0021] In the picture:
[0022] 1. Sterile syringe cannula; 2. Skylight; 3. Finger hook plate; 4. Hook knife; 5. Wrist arthroscopy body; 6. Anti-slip block. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. It should be noted that the drawings are schematic and not illustrated to scale. For clarity and convenience, the relative sizes and proportions of the parts shown in the drawings have been exaggerated or reduced in size. Any size is only illustrative and not limiting.
[0024] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown:
[0025] Example 1: This utility model provides a wrist arthroscopy cannula, comprising:
[0026] The sterile syringe cannula 1 has a through hole inside and a skylight 2 at the top. Finger hook plates 3 are symmetrically installed on the periphery of the sterile syringe cannula 1, and the finger hook plates 3 are located on one side of the periphery of the sterile syringe cannula 1.
[0027] Hook 4 is located on the other side of the sterile syringe cannula 1, and one side of hook 4 extends into the interior of the sterile syringe cannula 1.
[0028] The wrist arthroscopy body 5 is located on one side of the sterile syringe cannula 1.
[0029] Among them, a common Kirschner wire with a diameter of 3mm was selected as the guide, and the diameter of the wrist arthroscopy body 5 was 2.5mm.
[0030] As can be seen from the above, firstly, a window 2 is made at the top of the sterile syringe cannula 1 with a blade or scissors. The surgery is performed by making an incision of about 0.5 cm long at 1 cm proximal to the wrist crease, slightly off the ulnar side of the palmaris longus tendon. The skin, subcutaneous tissue and deep fascia are cut in sequence. The entrance of the carpal tunnel can be exposed by lifting the deep fascia with a small retractor. A regular Kirschner wire with a diameter of 3 mm is selected and the blunt end of the Kirschner wire is gently inserted along the entrance of the carpal tunnel. The Kaplan line is marked before the operation. An incision of about 0.5 cm long is made at the proximal end of the Kaplan line and the guide wire of the Kirschner wire is passed through.
[0031] The sterile syringe cannula 1 is inserted along the Kirschner wire guide and exits through the distal incision. The Kirschner wire guide is then removed. The wrist arthroscopy body 5 is inserted into the proximal end of the sterile syringe cannula 1. The transverse carpal ligament, which appears white and shiny, can be observed through the top window 2. The lens is then rotated to reveal the compressed and thinned median nerve through the transparent sterile syringe cannula 1. A hook knife 4 is inserted into the distal end of the sterile syringe cannula 1. Under the monitoring of the wrist arthroscopy body 5, the transverse carpal ligament is cut and released through the window 2. The surgery is then completed. The finger hook plate 3 allows for a stable grip on the sterile syringe cannula 1 during the surgery, ensuring the accuracy and safety of the insertion of the sterile syringe cannula 1 and reducing the risk of hand fatigue and misoperation.
[0032] When performing surgery using a sterile syringe cannula 1, hook knife 4, and wrist arthroscopy body 5, surgical consumables and treatment costs can be greatly reduced. The wrist arthroscopy body 5 is effective in treating carpal tunnel syndrome. The surgery is minimally invasive, requiring only two incisions of about 0.5 cm each, which avoids the palmar incision pain and discomfort caused by traditional surgery. Furthermore, the transverse carpal ligament is released under the monitoring of the wrist arthroscopy body 5, which prevents incomplete release or accidental damage to adjacent important tissues. The small incisions are closed with cosmetic sutures or medical adhesive.
[0033] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown:
[0034] Specifically, regarding the aforementioned skylight 2, the width of skylight 2 is 2mm, and the end of the hook 4 extends into the interior of skylight 2.
[0035] As can be seen from the above, by opening a 2mm wide window 2 at the top of the sterile syringe cannula 1, space can be provided for surgical processing during use.
[0036] As attached Figure 1 Appendix Figure 2 and attached Figure 4 As shown:
[0037] Specifically, regarding the sterile syringe cannula 1 mentioned above, anti-slip blocks 6 are installed on both sides of the finger hook plate 3, and the anti-slip blocks 6 are provided with anti-slip texture.
[0038] As can be seen from the above, the anti-slip block 6 on the finger hook plate 3 can increase the friction between the finger hook plate 3 and the operator's fingers during use, thereby making the operation of the finger hook plate 3 more stable.
[0039] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown:
[0040] Example 2: This example is basically the same as the previous example, except that the sterile syringe cannula 1 is made of a syringe with a capacity of 1mL.
[0041] As can be seen from the above, the sterile syringe cannula 1, made of a syringe with a capacity of 1mL, is hard in texture. After the window is opened at the top, the window 2 will not close or deform under the pressure of the surrounding soft tissue after the Kirschner wire guide is pulled out during the operation.
[0042] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.
[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0046] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.
[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A wrist arthroscopy cannula, characterized in that, include: A sterile syringe cannula (1) has a through hole inside, a skylight (2) is provided at the top of the sterile syringe cannula (1), and finger hook plates (3) are symmetrically installed on the periphery of the sterile syringe cannula (1), and the finger hook plates (3) are located on one side of the periphery of the sterile syringe cannula (1). Hook (4), the hook (4) is located on the other side of the sterile syringe cannula (1), and one side of the hook (4) extends into the interior of the sterile syringe cannula (1); The wrist arthroscopy body (5) is located on one side of the sterile syringe cannula (1).
2. The wrist arthroscopy cannula according to claim 1, characterized in that: The sterile syringe cannula (1) is made from a syringe with a capacity of 1 mL.
3. The wrist arthroscopy cannula according to claim 2, characterized in that: The width of the skylight (2) is 2mm, and the end of the hook (4) extends into the interior of the skylight (2).
4. The wrist arthroscopy cannula according to claim 3, characterized in that: Anti-slip blocks (6) are installed on both sides of the finger hook plate (3), and the anti-slip blocks (6) are provided with anti-slip texture.