Semi-open arthroscope retractor

Abstract

The utility model relates to a semi-open type arthroscope retractor, which belongs to the technical field of medical instruments and comprises a main body ring, an extension ring and a retraction sheet, the extension ring is connected and communicated with the main body ring, the main body ring is used for being held by a hand of an operator, the extension ring is used for extending the position of the retraction sheet, the retraction sheet is fixedly connected to the bottom of the extension ring, and the retraction sheet is fixedly connected with the extension ring. And the retraction sheet is an arc-shaped sheet. Due to the annular design of the main body and the extension ring, a tool can extend into a notch position from a central position for operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a semi-open arthroscope retractor. BACKGROUND

[0002] An arthroscope is an advanced medical instrument that uses optical principles to insert a lens into the joint through a small incision to observe the pathological changes inside the joint. A retractor is a device used to retract tissues or organs during surgery to allow the surgeon to operate better.

[0003] During arthroscopic surgery, a retractor is needed to retract the joint capsule or muscle to obtain a better surgical field of view and operating space because observation and operation need to be performed through a small incision. The existing arthroscopic retractors are complex in design, causing obstruction to the surgical site and preventing the surgeon from obtaining the best surgical field of view, thereby affecting the surgical outcome. Moreover, the complex structure of the retractor makes it difficult to clean and disinfect thoroughly, which may lead to infection of the surgical site and further affect the surgical outcome and the health of the patient.

[0004] Chinese invention with publication number CN106388883B discloses an auxiliary retractor under arthroscopy, which comprises a body, a driving device and a support structure. The body comprises a first end and a tail end. The driving device comprises a driving member connected to the body and adapted to move reciprocally along the extension direction of the body. The driving member has a first position and a second position. The relative movement of the driving member and the body in the direction perpendicular to the body is zero. The support structure is rotatably arranged at the first end of the body to drive the support structure to rotate with the movement of the driving member. When the driving member is in the first position, the support structure has a first angle with the extension direction of the body. When the driving member is in the second position, the support structure has a second angle with the extension direction of the body. The support structure can be expanded to any angle between the first angle and the second angle. However, the above-mentioned retractor has a driving device arranged in the body. After retraction, the incision site needs to be operated from the outside of the main body, the field of view is obstructed, and the operating space is small. SUMMARY

[0005] The utility model aims at providing a semi-open arthroscope retractor to solve the problem of obstructing the field of view and compressing the surgical space of the existing retractor in the background art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A semi-open arthroscope retractor comprises a main body ring, an extension ring and a retraction sheet. The extension ring is connected and communicated with the main body ring. The main body ring is used for holding by the hand of the operator. The extension ring is used for extending the position of the retraction sheet. The retraction sheet is fixedly connected to the bottom of the extension ring. The retraction sheet is an arc-shaped sheet.

[0008] Optionally, the arc of the retractor blade is π / 3~π.

[0009] Optionally, the bottom corner of the retractor blade is rounded.

[0010] Optionally, the bottom of the retractor blade is equidistantly provided with several observation grooves.

[0011] Optionally, the bottom corner of the observation groove is rounded.

[0012] Optionally, the diameter of the extension ring gradually increases from top to bottom, and the diameter of the retractor blade gradually increases from top to bottom, and the overall bottom expands outward.

[0013] Optionally, the outer side of the extension ring is thickened to form an extension, the bottom of the extension is provided with an avoidance groove, the retractor blade is slidably arranged in the avoidance groove, and is fixed through an adjusting bolt.

[0014] Optionally, the adjusting bolt and the retractor blade are rotatably connected, the retractor blade is provided with a sliding sleeve, the first end of the adjusting bolt is fixed in the sliding sleeve, the avoidance groove is provided with a threaded groove, the second end of the adjusting bolt extends to the outside of the extension through the threaded groove, and the adjusting bolt and the threaded groove are screwed.

[0015] Optionally, the adjusting bolt is provided with a knob for rotating the bolt.

[0016] Optionally, the top of the retractor blade is provided with a limiting strip, the extension ring is provided with a limiting groove corresponding to the position of the limiting strip, and the limiting strip is inserted into the corresponding limiting groove.

[0017] The utility model discloses the beneficial effects are as follows:

[0018] The annular design of the main body and the extension ring can stretch the tool from the center position to the cutout position for operation.

[0019] The arc-shaped retractor blade pulls the operation position, and has enough observation space and operation space while retaining the pulling effect.

[0020] The structure is simple, the production cost is low, easy to popularize, and convenient for disinfection. DRAWINGS

[0021] The drawings accompanying the specification provide further understanding of the utility model, and the schematic embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0022] Figure 1 It is a three-dimensional structure diagram of a semi-open type arthroscope retractor of the utility model embodiment 1.

[0023] Figure 2 It is a structure schematic view of a half-open type arthroscope retractor according to the embodiment 1 of the present application.

[0024] Figure 3 It is a three-dimensional structure view of a half-open type arthroscope retractor according to the embodiment 2 of the present application.

[0025] Figure 4 It is a three-dimensional structure view of a half-open type arthroscope retractor according to the embodiment 3 of the present application.

[0026] Figure 5 It is a three-dimensional structure view of a half-open type arthroscope retractor according to the embodiment 4 of the present application.

[0027] Figure 6 It is a structure schematic view of a half-open type arthroscope retractor according to the embodiment 4 of the present application.

[0028] Figure 7 It is a structure schematic view of a half-open type arthroscope retractor according to the embodiment 4 of the present application.

[0029] Figure 8 It is a structure schematic view of a half-open type arthroscope retractor according to the embodiment 5 of the present application.

[0030] Wherein: 1, main body ring; 2, extension ring; 21, extension; 3, retractor blade; 4, tool; 5, observation slot; 6, adjusting bolt; 7, knob; 8, position avoidance groove; 9, sliding sleeve; 10, threaded groove; 11, limiting strip. DETAILED DESCRIPTION

[0031] The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0032] The following detailed description is exemplary description, which aims to provide further detailed description of the present application. Unless otherwise specified, all technical terms used in the present application have the same meaning as that generally understood by the general technical personnel in the field to which the present application belongs. The terms used in the present application are only for the description of the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] The utility model aims at providing a kind of half-open arthroscope retractor, the device can be stretched into incision position from center position with tool to operate, and arc retraction piece is pulled to surgical site, retain traction effect while leaving enough observation space and surgical operation space.

[0035] In order to achieve the above object, the utility model adopts the following technical solutions:

[0036] Embodiment 1

[0037] As Figures 1-2 shown, a kind of half-open arthroscope retractor, including main body ring 1, extension ring 2 and retraction piece 3, the extension ring 2 is connected and communicated with main body ring 1, the main body ring 1 is used for operator hand holding, the extension ring 2 is used to extend the position of retraction piece 3, the retraction piece 3 is fixedly connected at the bottom of extension ring 2, and the retraction piece 3 is arc piece.

[0038] As a preferred example of the above embodiment, the retraction piece 3 is made of stainless steel, titanium alloy, carbon fiber and other materials with good biocompatibility.

[0039] As a preferred example of the above embodiment, the bottom corner of the retraction piece 3 is rounded, to avoid discomfort for the patient.

[0040] As a preferred example of the above embodiment, the arc of the retractor blade 3 is π / 3~π.

[0041] As a preferred example of the above embodiment, the arc of the retractor blade 3 is π

[0042] In use, when arthroscopic surgery is required, after anesthesia, incisions are made around the patient's joint, the operator holds the main ring 1 with his hand, the retractor blade 3 is inserted into the wound to retract the tissue, then a small arthroscope is inserted into the main ring 1 and extended into the area retracted by the arc-shaped retractor blade 3, i.e. the patient's joint, the image inside the joint is transmitted to the display screen for the doctor to observe and diagnose, if surgery is required, the operator will use small tools 4 (such as scissors, files, pliers, etc.) during observation to perform surgery from the main ring 1 into the incision, after the operation is completed, the operator removes the arthroscope or other tools from the patient's joint through the main ring 1, and closes any small incision for subsequent suturing.

[0043] The incision is usually sutured with sutures to promote healing and reduce the risk of infection.

[0044] The above scheme is a semi-open arthroscope retractor, which retracts the incision by the annular main ring 1 and the arc-shaped retractor blade 3, and reserves space for the use of small tools 4, solves the problem of existing retractors blocking the view and compressing the operation space, and achieves the technical effects of simple structure, convenient operation and wide view.

[0045] Embodiment 2

[0046] As a preferred example, as shown in Figure 3 the retractor blade 3 has a plurality of observation grooves 5 equidistantly opened at the bottom, which further reduces the obstruction of the retractor blade 3 to the view and facilitates subsequent surgical operation.

[0047] As a preferred example of the above embodiment, the corner at the bottom of the observation groove 5 is rounded to avoid discomfort for the patient.

[0048] Embodiment 3

[0049] As a preferred example, as shown in Figure 4 the diameter of the extension ring gradually increases from top to bottom, and the diameter of the retractor blade 3 gradually increases from top to bottom, the overall bottom expands outward, which can provide a larger retraction area and facilitate subsequent surgical operation.

[0050] Embodiment 4

[0051] As a preferred example, as shown in Figures 5-7As shown, the outer side of the extension ring 2 is thickened to form an extension portion 21. The bottom of the extension portion 21 has a relief groove 8. The pull-out piece 3 is slidably disposed in the relief groove 8 and fixed by the adjusting bolt 6.

[0052] As a preferred example of the above embodiment, the adjusting bolt 6 and the pull-away piece 3 are rotatably connected. The pull-away piece 3 is provided with a sliding sleeve 9. The first end of the adjusting bolt 6 is fixed in the sliding sleeve 9. The groove of the clearance groove 8 is provided with a threaded groove 10. The second end of the adjusting bolt 6 extends through the threaded groove 10 to the outside of the extension 21. The adjusting bolt 6 and the threaded groove 10 are screwed together.

[0053] As a preferred example of the above embodiment, the adjusting bolt 6 is provided with a knob 7 for rotating the bolt.

[0054] In use, turn knob 7. Turning knob 7 will cause adjusting bolt 6 to rotate. Since adjusting bolt 6 is screwed to threaded groove 10, adjusting bolt 6 can rotate inward or outward, thereby causing the retraction plate to move inward or outward, producing different traction effects to adapt to different surgical needs. When a larger traction range is needed, adjust the retraction plate to move outward; when a smaller traction range is needed, adjust the retraction plate to move inward.

[0055] Example 5

[0056] Example 5 is a preferred example, such as Figure 8 As shown, a limiting strip 11 is provided at the top of the retraction piece, and a limiting groove is opened in the extension ring 2 at the corresponding position of the limiting strip 11. The limiting strip 11 is inserted into the corresponding limiting groove. When the retraction piece moves horizontally, it balances the resistance at the bottom of the retraction piece and avoids uneven force on the retraction piece, which may cause it to tilt and affect the normal operation.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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.

[0058] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A semi-open arthroscopic retractor, characterized in that, It includes a main ring (1), an extension ring (2) and a retraction piece (3). The extension ring (2) and the main ring (1) are connected and communicate with each other. The main ring (1) is used for the surgeon's hand to hold. The extension ring (2) is used to extend the position of the retraction piece (3). The retraction piece (3) is fixedly connected to the bottom of the extension ring (2). The retraction piece (3) is an arc-shaped piece.

2. The semi-open arthroscopic retractor as described in claim 1, characterized in that, The radius of the pull-out piece (3) is π / 3~π.

3. The semi-open arthroscopic retractor as described in claim 1, characterized in that, The bottom corner of the pull-out piece (3) is rounded.

4. The semi-open arthroscopic retractor as described in claim 1, characterized in that, The bottom of the pull-out piece has several observation slots (5) at equal intervals.

5. A semi-open arthroscopic retractor as described in claim 4, characterized in that, The bottom corner of the observation slot (5) is rounded.

6. The semi-open arthroscopic retractor as described in claim 1, characterized in that, The diameter of the extension ring (2) gradually increases from top to bottom, and the diameter of the pull-out piece (3) gradually increases from top to bottom, with the bottom of the whole expanding outward.

7. The semi-open arthroscopic retractor as described in claim 1, characterized in that, The outer side of the extension ring (2) is thickened to form an extension (21), and a relief groove (8) is opened at the bottom of the extension (21). The pull-out piece (3) is slidably disposed in the relief groove (8) and fixed by an adjusting bolt (6).

8. A semi-open arthroscopic retractor as described in claim 7, characterized in that, The adjusting bolt (6) and the pull-out piece (3) are rotatably connected. The pull-out piece (3) is provided with a sliding sleeve (9). The first end of the adjusting bolt (6) is fixed in the sliding sleeve (9). The groove of the relief groove (8) has a threaded groove (10). The second end of the adjusting bolt (6) extends through the threaded groove (10) to the outside of the extension (21). The adjusting bolt (6) and the threaded groove (10) are screwed together.

9. A semi-open arthroscopic retractor as described in claim 8, characterized in that, The adjusting bolt (6) is provided with a knob (7) for rotating the bolt.

10. A semi-open arthroscopic retractor as described in claim 9, characterized in that, The top of the pull-out piece is provided with a limiting strip (11), and a limiting groove is opened in the extension ring (2) at the position corresponding to the limiting strip (11). The limiting strip (11) is inserted into the corresponding limiting groove.

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