Wrist arthroscope channel stabilizing device

Abstract

The invention relates to the field of auxiliary instruments for wrist arthroscopic surgery, and particularly discloses a wrist arthroscopic channel stabilizing device which comprises a groove type sleeve made of a disposable vein infusion tube, the tube wall of the groove type sleeve is cut off in the longitudinal direction to form an open groove, the two ends of the groove type sleeve are cut to be smooth, and the length of the groove type sleeve is suitable for a wrist arthroscopic surgery approach; by establishing the stable channel, the instrument can freely slide along the groove wall of the stable channel, repeated friction and injury of the surgical instrument to subcutaneous tissues around an approach, such as joint capsules, blood vessels, nerves and tendons, are effectively avoided, surgical wounds are remarkably reduced, multiple times of access of the same channel can be ensured, no tissue implication is caused, and the surgical efficiency is improved. By the adoption of the structure, intra-articular operation can be rapidly transferred to be conducted outside the joint, the annular design reduces compression damage to channel tissue, it is guaranteed that the sleeve always exists, and the open type notch design enables an operation instrument to obtain a free operation space.

Description

Technical Field

[0001] This invention belongs to the field of wrist arthroscopic surgical aids, specifically a wrist arthroscopic channel stabilization device. Background Technology

[0002] Wrist arthroscopy is an important minimally invasive technique for diagnosing and treating wrist diseases. It involves inserting an arthroscope and instruments through several tiny incisions (surgical approaches), allowing surgeons to explore and repair lesions within the joint under direct vision. Compared to open surgery, arthroscopic surgery has significant advantages in terms of minimal trauma and rapid recovery. Maintaining a stable and patent instrument channel is crucial to ensuring the success of the surgery. In large arthroscopic surgeries such as those of the knee and shoulder, commercially available access cannulas are commonly used. These cannulas are typically hollow, rigid tubular structures that are left in place within the access channel to protect surrounding tissues, guide instruments in and out, prevent excessive fluid extravasation, and serve as a channel for suture delivery.

[0003] However, in the field of wrist arthroscopy, the complex anatomy of the wrist joint, its extremely limited space, and the lack of abundant soft tissue surrounding the access point, coupled with the dense distribution of important nerves, blood vessels, and tendons, make it difficult to directly apply the conventional access cannulas used for large joints. The core drawback is that existing commercially available cannulas, due to their excessive diameter and rigidity, cannot be safely inserted into the delicate wrist joint access; even if forced insertion is attempted, their large size occupies the already limited joint cavity space, severely hindering the instrument's field of vision and range of motion, and may even cause iatrogenic compression damage to the articular cartilage and surrounding critical tissues.

[0004] Therefore, in the absence of a dedicated access cannula, current clinical wrist arthroscopy typically relies on repeatedly using mosquito forceps to dissect and dilate the incision to establish an instrument channel. This traditional method fails to create a stable operating channel, resulting in varying degrees of damage to the subcutaneous tissue and joint capsule around the incision with each instrument insertion and withdrawal. This not only increases the risk of postoperative swelling and nerve damage but also prolongs the operation time, significantly limiting the efficiency and precision of wrist arthroscopy. This invention aims to solve this long-standing technical problem. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a wrist arthroscopy channel stabilization device to solve the problems of unstable instrument channels, high risk of tissue damage, and low surgical efficiency caused by the lack of dedicated cannulas in the prior art.

[0006] A wrist arthroscopy access stabilization device includes a grooved cannula made of a disposable intravenous infusion tube, wherein the wall of the grooved cannula is partially cut off along the longitudinal direction to form an open groove, the two ends are trimmed smooth, and the length is suitable for use in wrist arthroscopy surgical access.

[0007] Preferably, the disposable intravenous infusion tube has an outer diameter of 4.0 mm, an inner diameter of 3.0 mm, and a wall thickness of 1 mm.

[0008] Preferably, the width of the groove opening of the grooved sleeve is 1 / 3 to 1 / 2 of the circumference of the pipe wall.

[0009] Preferably, the length of the grooved sleeve is 12 centimeters.

[0010] A method of using the wrist arthroscopic channel stabilization device as described above includes the following steps:

[0011] S1. During wrist arthroscopic surgery, the arthroscope is inserted through an observed approach;

[0012] S2. Using an instrument to hold one end of the slotted cannula, insert it into the wrist joint cavity through the working approach, and push it into the joint cavity under arthroscopic monitoring.

[0013] S3. Move the arthroscope from the observation approach to the working approach;

[0014] S4. Using gripping forceps, clamp the end of the slotted cannula located in the joint cavity through the observation approach and lead it out of the observation approach to the outside of the body;

[0015] S5. Fix both ends of the externally located grooved sleeve using a fixing device.

[0016] Preferably, the instrument described in step S2 is a mosquito pliers.

[0017] Preferably, the fixing device mentioned in step S5 is a mosquito clamp, and the fixing method is to clamp and fix the two ends of the groove sleeve "back to back".

[0018] Preferably, after step S5, the method further includes:

[0019] S6. Insert the arthroscopic instruments into the wrist joint cavity along the groove wall of the annular instrument channel for operation; the arthroscopic instruments include an arthroscope, grasping forceps, or probe.

[0020] Preferably, after the annular instrument channel is formed in step S5, the grooved sleeve is also used as an outlet channel for the injection fluid.

[0021] Preferably, the observation approach is the wrist joint 3 / 4 approach, and the working approach is the wrist joint 6R approach.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By adopting a grooved cannula modified from a disposable intravenous infusion tube and its unique open groove design, the way surgical instruments are inserted and operated has been fundamentally changed. In traditional operations, instruments need to repeatedly penetrate soft tissue, but this device, through the establishment of this stable channel, allows instruments to slide freely along its groove wall, effectively avoiding repeated friction and damage to subcutaneous tissues around the entry point, such as joint capsules, blood vessels, nerves and tendons, significantly reducing surgical trauma. It can ensure multiple insertions and exits through the same channel without tissue embedding, allowing intra-articular operations to be quickly transferred to extra-articular operations. The ring design reduces pressure damage to the channel tissues while ensuring that the cannula is always present, and the open groove design allows the operating instruments to obtain free operating space.

[0024] The instrument channel formed by the slotted sleeve allows multiple instruments to enter the joint cavity accurately and quickly along the same path; its open slot structure allows the instruments to be flexibly moved out of the channel for operation after entering the joint, freeing them from the constraints of traditional fully enclosed sleeves on the instrument's range of motion. This greatly improves the instrument's operating range and flexibility within the extremely limited space of the wrist joint, making it possible to complete complex and delicate operations.

[0025] Ultimately, this device improves the overall efficiency of wrist arthroscopic surgery by providing a stable, low-invasive, and highly flexible operating channel. It not only reduces the time required to establish and maintain the operating channel, but also makes some endoscopic surgeries that were previously difficult to perform due to technical limitations possible by reducing the risk of tissue damage and enhancing operational controllability. It has significant clinical application value. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a surgical diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the method flow of the present invention.

[0029] In the diagram: 1. Grooved sleeve; 2. Open groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 As shown:

[0032] Example 1: The present invention provides a wrist arthroscopy channel stabilization device, including a grooved cannula 1 made of disposable intravenous infusion tubing. The wall of the grooved cannula 1 is partially cut off along the longitudinal direction to form an open groove 2. Both ends are trimmed and smoothed, and the length is suitable for use in wrist arthroscopy.

[0033] As can be seen from the above, the core component of this device is a grooved cannula 1 modified from a disposable intravenous infusion tube; the grooved cannula 1 forms a continuous open groove 2 by longitudinally removing part of its structure along its wall, and its two ends are trimmed to ensure a smooth surface. Its overall length is specially designed to be suitable for the narrow operating access in wrist arthroscopic surgery.

[0034] This device consists of a grooved sleeve 1 and its opening groove 2, which can serve as a stable surgical operation channel. The structure of the opening groove 2 allows surgical instruments to move flexibly through the joint cavity after entering it, eliminating the limitation of the instrument operation angle on the traditional closed sleeve, thereby significantly improving the flexibility and range of instrument operation within the limited space of the wrist joint.

[0035] Therefore, this device, through the cooperation of the slotted cannula 1 and the opening slot 2, establishes a stable, low-trauma instrument channel with a high degree of operational freedom for wrist arthroscopic surgery, effectively solving the problems of difficulty in instrument entry and exit, repeated tissue damage, and low surgical efficiency caused by narrow access and lack of commercially available cannulas.

[0036] Example 2: This example is basically the same as the previous example, except that the outer diameter of the disposable intravenous infusion tube is 4.0 mm, the inner diameter is 3.0 mm, and the wall thickness is 1 mm.

[0037] Specifically, the width of the opening groove 2 of the slotted sleeve 1 is 1 / 3 to 1 / 2 of the circumference of the tube wall, thereby ensuring smooth entry and exit of the instrument and flexibility of operation.

[0038] Specifically, the length of the grooved cannula 1 is 12 cm; this size perfectly matches the depth requirements of the wrist arthroscopic surgical approach and facilitates external fixation.

[0039] As can be seen from the above, by specifically limiting the size of the grooved sleeve 1 and its opening groove 2, this embodiment optimizes the physical characteristics of the device, enabling it to better integrate into the surgical procedure while having sufficient structural strength, effectively maintaining the stability of the channel and reducing damage to surrounding tissues, thereby improving the controllability and safety of the entire surgical operation.

[0040] like Figure 2 As shown:

[0041] Example 3: This example is basically the same as the previous example, except that a method of using the wrist arthroscopy channel stabilization device as described above includes the following steps:

[0042] S1. During wrist arthroscopic surgery, the arthroscope is inserted through an observed approach;

[0043] S2. Using an instrument to hold one end of the slotted cannula, insert it into the wrist joint cavity through the working approach, and push it into the joint cavity under arthroscopic monitoring.

[0044] S3. Move the arthroscope from the observation approach to the working approach;

[0045] S4. Using gripping forceps, clamp the end of the slotted cannula located in the joint cavity through the observation approach and lead it out of the observation approach to the outside of the body;

[0046] S5. Fix both ends of the externally located grooved sleeve using a fixing device.

[0047] Specifically, the instrument in step S2 is a mosquito pliers.

[0048] Specifically, the fixing device in step S5 is a mosquito clamp, and the fixing method is to clamp and fix the two ends of the grooved sleeve "back to back".

[0049] Specifically, after step S5, the following also includes:

[0050] S6. Insert the arthroscopic instruments into the wrist joint cavity along the groove wall of the annular instrument channel for operation; the arthroscopic instruments include arthroscopes, grasping forceps or probes.

[0051] Specifically, after the annular instrument channel is formed in step S5, the grooved sleeve is also used as the outlet channel for the injection fluid.

[0052] Specifically, the observation approach is the wrist joint 3 / 4 approach, and the working approach is the wrist joint 6R approach.

[0053] As can be seen from the above, this method establishes the slotted cannula 1 as a channel connecting the observation approach and the working approach through steps S1 to S5; this method uses arthroscopy for visual guidance and uses instruments such as mosquito forceps to precisely clamp, push and fix the slotted cannula 1, ultimately forming a stable operating path.

[0054] Through the standardized steps described above, the slotted cannula 1 is efficiently constructed as an instrument channel. This method of use not only fully leverages the advantages of the device in stabilizing the channel and reducing tissue damage, but also expands its auxiliary function as a water outlet channel, significantly improving the operational efficiency, safety, and controllability of wrist arthroscopic surgery.

[0055] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made by those skilled in the art to the above embodiments within the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A wrist arthroscopy channel stabilization device, characterized in that, It includes a grooved cannula (1) made of disposable intravenous infusion tubing, wherein the wall of the grooved cannula (1) is partially cut off along the longitudinal direction to form an open groove (2), and both ends are trimmed smooth, with a length suitable for use in wrist arthroscopic surgery.

2. The wrist arthroscopy channel stabilization device as described in claim 1, characterized in that, The disposable intravenous infusion tube has an outer diameter of 4.0 mm, an inner diameter of 3.0 mm, and a wall thickness of 1 mm.

3. The wrist arthroscopy channel stabilization device as described in claim 1, characterized in that, The width of the opening groove (2) of the grooved sleeve (1) is 1 / 3 to 1 / 2 of the circumference of the pipe wall.

4. The wrist arthroscopy channel stabilization device as described in claim 1, characterized in that, The length of the grooved sleeve (1) is 12 cm.

5. A method of using the wrist arthroscopy channel stabilization device as described in any one of claims 1 to 4, characterized in that, Includes the following steps: S1. During wrist arthroscopic surgery, the arthroscope is inserted through an observed approach; S2. Using an instrument to hold one end of the slotted cannula, insert it into the wrist joint cavity through the working approach, and push it into the joint cavity under arthroscopic monitoring. S3. Move the arthroscope from the observation approach to the working approach; S4. Using gripping forceps, clamp the end of the slotted cannula located in the joint cavity through the observation approach and lead it out of the observation approach to the outside of the body; S5. Fix both ends of the externally located grooved sleeve using a fixing device.

6. The method of using the wrist arthroscopy channel stabilization device as described in claim 5, characterized in that, The instrument mentioned in step S2 is a mosquito pliers.

7. The method of using the wrist arthroscopy channel stabilization device as described in claim 5, characterized in that, The fixing device mentioned in step S5 is a mosquito clamp, and the fixing method is to clamp and fix the two ends of the groove sleeve "back to back".

8. The method of using the wrist arthroscopy channel stabilization device as described in claim 5, characterized in that, Step S5 is followed by: S6. Insert the arthroscopic instruments into the wrist joint cavity along the groove wall of the annular instrument channel for operation; the arthroscopic instruments include an arthroscope, grasping forceps, or probe.

9. The method of using the wrist arthroscopy channel stabilization device as described in claim 5, characterized in that, After the annular instrument channel is formed in step S5, the grooved sleeve is also used as the outlet channel for the injection fluid.

10. The method of using the wrist arthroscopy channel stabilization device as described in claim 5, characterized in that, The observation approach is the wrist joint 3 / 4 approach, and the working approach is the wrist joint 6R approach.

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