Space dilator for thyroid surgery

Abstract

The utility model relates to the technical field of level gauges, and discloses a space dilator for thyroid surgery, which comprises a sleeve and two groups of cutters, a rotating cylinder penetrates through the top of the sleeve, a push plate is rotatably mounted at one end of the rotating cylinder inside the sleeve, a push rod penetrates through the middle of the push plate, and one end of the push rod penetrates out of the top end of the rotating cylinder. The other end of the push rod penetrates out of the sleeve and is rotationally provided with a moving block, the tail ends of the two cutters are rotationally installed on the push plate, and sliding grooves matched with the moving block to penetrate through are formed in the sides, close to each other, of the two cutters. Compared with the prior art, the space dilator has the advantages that when the space dilator enters from an incision, the tail portions of the two sets of cutters are collected into the sleeve to be in a contact and combined state, when the cutters enter an operation area, the two sets of cutters are separated, a fan-shaped complete space is cut in the operation area through the cutting edges, and an endoscope can conveniently observe internal tissue.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a space expander for thyroid surgery. Background Art

[0002] In order to reduce the size of scars during surgical treatment of thyroid diseases, laparoscopic thyroid surgery is usually used. Laparoscopic thyroid surgery makes the wound tiny and hidden, taking into account the advantages of safe removal of thyroid lesions and cosmetic treatment. It is currently being carried out more and more widely.

[0003] Laparoscopic thyroid surgery requires the use of a flap separation instrument. The existing subcutaneous separation rod is composed of a handle and a separation rod body connected together. The front end of the separation rod body is conical or spindle-shaped. During the operation, an incision is made on the patient's chest. The surgeon controls the handle to insert the subcutaneous separation rod into the patient's body through the incision, separating a series of intersecting circular channels under the skin, allowing the laparoscope and ultrasonic knife to enter the newly established channels for operation, and connecting these channels into a complete surgical space.

[0004] This subcutaneous separation rod has the following problems: it causes unnecessary damage to tissues in non-surgical areas, it is difficult and time-consuming to connect the channels into a complete space, the separated channels are narrow, the visual range is small, and the image is blurred. Utility Model Content

[0005] 1. Technical Problems Solved

[0006] The technical problem to be solved by the present invention is that unnecessary damage is caused to tissues in non-surgical areas. It is difficult and time-consuming to connect the channels into a complete space, and the separated channels are narrow.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the technical solution provided by the utility model is: a space expander for thyroid surgery, comprising a sleeve and two groups of cutters, a rotating cylinder passing through the top of the sleeve, a push plate rotatably installed at one end of the rotating cylinder located inside the sleeve, a push rod passing through the middle of the push plate, one end of the push rod passing through the top of the rotating cylinder, the other end of the push rod passing through the sleeve and rotatably installed with a moving block, the tail ends of the two groups of cutters are respectively rotatably installed on the push plates, and a sliding groove for matching the moving block is provided inside the side where the two groups of cutters are close to each other.

[0009] As an improvement, the moving block is an isosceles trapezoidal structure.

[0010] As an improvement, the side of the bottom of the chute close to the sleeve is a sloped structure, and the two slopes of the moving block are in contact with the bottom of the chute respectively.

[0011] As an improvement, the inner wall of the rear end of the sleeve is provided with a limit block for supporting the cutter.

[0012] As an improvement, a threaded sleeve 1 passes through the top of the sleeve, and the outer wall of the rotating cylinder is provided with a thread that engages with the threaded sleeve 1.

[0013] As an improvement, a second threaded sleeve is installed on the push plate, one end of the second threaded sleeve passes through the interior of the rotating cylinder, and the outer wall of the push rod is provided with a thread that matches the second threaded sleeve.

[0014] As an improvement, the other end of the rotating cylinder is equipped with a rotating wheel 1, and one end of the push rod passes through the top end of the rotating cylinder and the rotating wheel 1 and is equipped with a rotating wheel 2.

[0015] 3. Beneficial Effects

[0016] The advantages of the present invention over the prior art are that when the space expander enters from the incision, the tail ends of the two sets of cutters are retracted into the sleeve and are in a contact and merged state; when the cutters enter the surgical area, the two sets of cutters are separated, and a complete fan-shaped space is cut out of the surgical area by the blades, making it easier for the laparoscope to observe the internal tissues. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of a space expander used for thyroid surgery.

[0018] Figure 2 The utility model is a schematic diagram of the combined structure of a cutter and a space expander for thyroid surgery.

[0019] Figure 3 The utility model is a schematic diagram of a cutter separation structure of a space expander used for thyroid surgery.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a cutting blade of a space expander used for thyroid surgery.

[0021] As shown in the figure: 1. Sleeve; 2. Cutter; 3. Threaded sleeve 1; 4. Rotating cylinder; 5. Rotary wheel 1; 6. Push plate; 7. Threaded sleeve 2; 8. Push rod; 9. Rotary wheel 2; 10. Moving block; 11. Slide; 12. Limit block. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4 As shown, a space expander for thyroid surgery includes a sleeve 1 and two groups of cutters 2. A rotating cylinder 4 passes through the top of the sleeve 1, and a push plate 6 is rotatably installed at one end of the rotating cylinder 4 located inside the sleeve 1. A push rod 8 passes through the middle of the push plate 6, and one end of the push rod 8 passes through the top of the rotating cylinder 4, and the other end of the push rod 8 passes through the sleeve 1 and is rotatably installed with a moving block 10. The tail ends of the two groups of cutters 2 are rotatably installed on the push plate 6 respectively, and a sliding groove 11 for cooperating with the moving block 10 to pass through is provided inside the side where the two groups of cutters 2 are close to each other.

[0025] Through the above structure, the initial state of the two sets of cutters 2 is that the tail ends are retracted into the sleeve, and the two sets of cutters 2 are in a contact and merged state. The cutters 2 and the sleeve 1 enter the surgical area from the incision, and the push plate 6 is pushed laterally by the rotating cylinder 4 to extend the cutter 2 out of the sleeve. The tail end of the cutter 2 is located inside the sleeve 1, and then the moving block 10 is driven by the push rod 8 to move. The moving block 10 slides in the direction of the sleeve 1 inside the slide groove 11 to support the two sets of cutters 2, so that the two sets of cutters 2 are separated. The blades of the cutters 2 cut a complete fan-shaped space in the surgical area, which is convenient for laparoscope observation of internal tissues. The specific structure is as follows:

[0026] Combined with attachment Figure 1 and attached Figure 4 As shown, the moving block 10 is an isosceles trapezoidal structure, the bottom of the slide groove 11 close to the side of the sleeve 1 is an inclined structure, the two inclined surfaces of the moving block 10 are in contact with the bottom of the slide groove 11 respectively, and the inner wall of the rear end of the sleeve 1 is provided with a limit block 12 for supporting the cutting knife 2.

[0027] Through the above structure, the distance between the bottoms of the two groups of slide grooves 11 on one side close to the sleeve 1 is smaller than the distance between the bottoms on the other side. When the moving block 10 of the isosceles trapezoidal structure slides inside the slide groove 11, it contacts the bottom of the slide groove 11 and pushes the two groups of cutters 2 to move away from each other, separating the two groups of cutters 2. The cutter 2 is clamped and positioned by the inclined surface of the moving block 10 and the limit block 12 to ensure the stability of the cutter 2.

[0028] Combined with attachment Figure 1 As shown, a threaded sleeve 3 passes through the top of the sleeve 1, and the outer wall of the rotating cylinder 4 is provided with a thread engaged with the threaded sleeve 3, and a wheel 5 is installed at the other end of the rotating cylinder 4.

[0029] Through the above structure, the rotating drum 4 is driven to rotate by rotating the rotating wheel 5, which is more labor-saving. The rotating drum 4 rotates inside the threaded sleeve 3 in conjunction with the thread, so that the rotating drum 4 can move laterally and smoothly inside the sleeve 1.

[0030] Combined with attachment Figure 1 As shown, a threaded sleeve 2 7 is installed on the push plate 6, one end of the threaded sleeve 2 7 passes through the interior of the rotating cylinder 4, and the outer wall of the push rod 8 is provided with a thread that matches the threaded sleeve 2 7. One end of the push rod 8 passes through the top of the rotating cylinder 4 and the rotating wheel 1 5 and is installed with the rotating wheel 2 9.

[0031] Through the above structure, the push rod 8 is driven to rotate by the second rotating wheel 9, which is more labor-saving. The push rod 8 rotates inside the second threaded sleeve 7 in conjunction with the thread, so that the push rod 8 can move horizontally and smoothly inside the rotating cylinder 4.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0034] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without creatively designing a structure and embodiment similar to the technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A space expander for thyroid surgery, comprising a sleeve (1) and two sets of cutters (2), characterized in that: A rotating cylinder (4) passes through the top of the sleeve (1), and a push plate (6) is rotatably installed on one end of the rotating cylinder (4) located inside the sleeve (1). A push rod (8) passes through the middle of the push plate (6), and one end of the push rod (8) passes through the top of the rotating cylinder (4). The other end of the push rod (8) passes through the sleeve (1) and is rotatably installed with a moving block (10). The tail ends of the two groups of cutters (2) are rotatably installed on the push plate (6) respectively, and a sliding groove (11) for the moving block (10) to pass through is provided inside the side where the two groups of cutters (2) are close to each other.

2. The space expander for thyroid surgery according to claim 1, characterized in that: The moving block (10) is an isosceles trapezoidal structure.

3. The space expander for thyroid surgery according to claim 2, characterized in that: The bottom of the chute (11) is provided with an inclined surface structure on one side close to the sleeve (1), and the two inclined surfaces of the moving block (10) are in contact with the bottom of the chute (11) respectively.

4. The space expander for thyroid surgery according to claim 1, characterized in that: The inner wall of the rear end of the sleeve (1) is provided with a limiting block (12) for supporting the cutting knife (2).

5. The space expander for thyroid surgery according to claim 1, characterized in that: A threaded sleeve (3) passes through the top of the sleeve (1), and the outer wall of the rotating cylinder (4) is provided with a thread engaged with the threaded sleeve (3).

6. The space expander for thyroid surgery according to claim 1, characterized in that: The push plate (6) is provided with a second threaded sleeve (7), one end of which passes through the interior of the rotating cylinder (4), and the outer wall of the push rod (8) is provided with a thread that matches the second threaded sleeve (7).

7. The space expander for thyroid surgery according to claim 1, characterized in that: The other end of the rotating cylinder (4) is equipped with a rotating wheel (5), and one end of the push rod (8) passes through the top end of the rotating cylinder (4) and the rotating wheel (5) and is equipped with a rotating wheel (9).

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