Muscle distraction device for thyroid surgery

Abstract

The invention provides a muscle distraction device for thyroid surgery, and relates to the field of medical instruments. The muscle distraction device for the thyroid surgery comprises a concave frame, an opening groove is formed in the concave frame, a moving block is arranged in the opening groove in a sliding fit mode, a connecting rod is arranged at one end of the moving block, one end of the connecting rod penetrates through the outer portion of the concave frame, and a transverse plate is fixedly connected to the end, away from the moving block, of the connecting rod; the end, away from the connecting rod, of the transverse plate is fixedly connected with a threaded sleeve, and the interior of the threaded sleeve is in threaded connection with a two-way screw. The pulled-out bolt rod is separated from the moving block, the limiting insertion rod and the connecting rod, at the moment, the connecting rod and the fixing column are of an insertion structure, then the rotary knob is rotated, the threaded sleeve is separated from the two-way screw in a threaded mode, the separation and disassembly effects of the transverse plate, the threaded sleeve and the connecting rod can be completed, and disinfection treatment is facilitated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a muscle retractor for thyroid surgery. Background Technology

[0002] Thyroidectomy is a surgical procedure for treating thyroid diseases, mainly divided into total resection and partial resection. Total resection involves removing all tissue from one side of the thyroid gland, usually preserving the other side to maintain physiological function, and is suitable for malignant lesions such as thyroid cancer; partial resection is suitable for benign tumors, goiter, and hyperthyroidism.

[0003] Indications for this surgery include malignant thyroid tumors, goiter compressing the trachea, and hyperthyroidism unresponsive to drug treatment. Contraindications include diffuse goiter in young adults, postoperative recurrence, and patients with severe complications. The surgery is performed under cervical plexus anesthesia or general anesthesia, and involves steps such as separating the blood vessels around the thyroid gland, managing the isthmus, and removing the diseased tissue. Care must be taken to protect the recurrent laryngeal nerve and parathyroid glands during the procedure. Postoperative recurrence or complications such as exophthalmos may occur; the timing of surgery during pregnancy needs to be carefully considered.

[0004] In existing thyroid surgery, after making an incision in the muscle, forceps are used to open the muscle. However, it is not convenient to adjust the angle of the opening after it is opened, which makes it impossible to precisely adjust and control the opening during surgery. Furthermore, the traditional muscle opening device is not easy to disassemble, making it impossible to disassemble and thoroughly disinfect after use, which is inconvenient.

[0005] When applying for this invention, the applicant, through a search, discovered a Chinese patent disclosing a "muscle retractor for thyroid surgery," application number "202411229151.4." This patent mainly uses a movable plate that moves near a bending plate inside the installation cabinet, achieving automatic inflation of the airbag through a linkage structure. This not only simplifies the surgical procedure but also gradually increases the contact area between the airbag and the patient's opening during the retracting process. This increased contact area helps to distribute pressure, reduce pressure on a single area, and maintain a soft touch, further alleviating patient discomfort. However, the structure of this retractor is not convenient for quick disassembly, making it impossible to disassemble and thoroughly disinfect after use. Therefore, based on the applicant's invention, a muscle retractor for thyroid surgery has been invented, solving the problem that the traditional muscle retractor structure is inconvenient to disassemble, resulting in the inability to disassemble and thoroughly disinfect after use. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a muscle retractor for thyroid surgery, which solves the problem that traditional muscle retractors are difficult to disassemble, making thorough disinfection impossible after use.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a muscle retractor for thyroid surgery, comprising: a concave frame, wherein an opening groove is provided inside the concave frame, a movable block is slidably fitted inside the opening groove, a connecting rod is provided at one end of the movable block, one end of the connecting rod passes through the outside of the concave frame, a horizontal plate is fixedly connected to the end of the connecting rod away from the movable block, a threaded sleeve is fixedly connected to the end of the horizontal plate away from the connecting rod, a bidirectional screw is threadedly connected inside the threaded sleeve, two concave frames are provided, a retractor plate is provided on both sides between the two concave frames, a rotating shaft is fixedly connected to both ends of the rear side of the retractor plate and both sides of the movable block, and a rotating rod is rotatably connected between the rotating shafts.

[0008] As a preferred technical solution of the present invention: a T-shaped groove is provided at the bottom end of the expansion plate, a T-shaped block is inserted into the inside of the T-shaped groove, and a pointed cone expansion plate is fixedly connected to the bottom end of the T-shaped block.

[0009] As a preferred embodiment of the present invention: a fixing plate is fixedly connected to the top center of the concave frame and one end of the expansion plate, a limiting slide rod passes through the inside of the fixing plate, and a limiting disc is fixedly connected to both ends of the limiting slide rod.

[0010] As a preferred embodiment of the present invention: an L-shaped block is fixedly connected to the outer side of the expansion plate, and a knob is fixedly connected to the middle of the bidirectional screw.

[0011] As a preferred technical solution of the present invention: the movable block has a through hole inside, a fixing post is fixedly connected inside the through hole, a limit plug is fixedly connected to the middle of one end of the fixing post, and a slot and a protrusion are provided on the outside of the fixing post.

[0012] As a preferred technical solution of the present invention: the limiting rod, the slot and the protrusion are all inserted and cooperate with the connecting rod, the connecting rod and the limiting rod are provided with pin holes, and a pin rod passes through the moving block, the pin hole and the limiting rod.

[0013] As a preferred technical solution of the present invention: the pointed cone expansion plate is arc-shaped and the bottom is pointed cone-shaped, and the pointed cone expansion plate is made of hard rubber material.

[0014] A method for operating a muscle retractor device used in thyroid surgery includes the following specific operating steps: Step 1: Before use, turn the knob in the opposite direction to engage the threaded sleeve with the double-ended screw, so that the threaded sleeve can move to the end. During the movement, it can drive the horizontal plate and the connecting rod to move outward. When the connecting rod moves, it can move the moving block to the end position of the concave frame. Thus, through the rotational engagement of the moving block and the rotating rod, the pull-back action is completed. Since the limiting slide rod limits the opening plates on both sides, it can only achieve expansion and retraction in the middle position. At this time, the opening plates are close together, and the bottom pointed cone expansion plates of the opening plates are in contact with each other. Step Two: Medical staff perform thyroid surgery on the patient, cutting open the skin and flesh tissue. After the incision, the conical expansion plate is inserted into the skin and flesh tissue. Then, by rotating the knob clockwise, the double-ended screw and the threaded sleeve are brought together. At this time, the horizontal plate is close to the concave frame. During the approach, the position of the moving block can be moved to provide rotational support for the rotating rod. Again, due to the limitation of the limiting slide rod, the expansion plate can be expanded outward. At this time, the conical expansion plate expands by contacting the muscle opening, thereby achieving the expansion and support function. Furthermore, the concave frame adopts a segmented structure, which makes it easy for medical staff to perform surgical operations at the openings between the concave frames and prevents interference with the surgical situation. Step 3: When the muscle opening is large, an L-shaped block can be used to resist the muscle. At this time, the T-shaped block and the bottom wall of the expansion plate slide. Then the pointed cone expansion plate is disassembled from the overall structure of the expansion plate. Then the outer L-shaped block of the expansion plate abuts against the inner wall of the muscle opening. Using the same operation method, the expansion plate can be expanded again. Step 4: When it is necessary to disassemble and disinfect the overall structure, the pin can be pulled outward through the slotted opening on the upper surface of the concave frame. After being pulled out, the pin will be separated from the moving block, the limiting pin, and the connecting rod. At this time, the connecting rod and the fixed column are connected by a plug. Then, turn the knob to disengage the threaded sleeve from the double-ended screw, thus completing the disassembly of the horizontal plate, the threaded sleeve, and the connecting rod, which is convenient for disinfection.

[0015] (III) Beneficial Effects This invention provides a muscle retractor for thyroid surgery. It has the following beneficial effects: 1. This invention comprises a knob, a threaded sleeve, a horizontal plate, a conical expansion plate, and a rotating rod. By rotating the knob in the forward direction, the bidirectional screw and the threaded sleeve are brought together threadedly. At this time, the horizontal plate approaches the concave frame. During the approach process, the position of the moving block can be moved to provide rotational support for the rotating rod. As the conical expansion plate contacts and expands with the muscle opening, it achieves an expansion and support function. Furthermore, the concave frame adopts a segmented structure, which facilitates surgical operations by medical personnel at the openings between the concave frames and prevents interference with the surgical procedure.

[0016] 2. This invention is equipped with: a pin rod, a connecting rod, a threaded sleeve, and a fixing post. After being pulled out, the pin rod will disengage from the moving block, the limiting pin rod, and the connecting rod. At this time, the connecting rod and the fixing post are in a plug-in structure. Then, by turning the knob, the threaded sleeve is disengaged from the double-ended screw, thus completing the disassembly and removal of the horizontal plate, the threaded sleeve, and the connecting rod, which is convenient for disinfection.

[0017] 3. This invention comprises a threaded sleeve, a bidirectional screw, a connecting rod, and a concave frame. When the knob is rotated in the opposite direction, the threaded sleeve engages with the bidirectional screw, enabling the threaded sleeve to move towards the end. During this movement, the horizontal plate and the connecting rod move outward. As the connecting rod moves, it moves the moving block towards the end position of the concave frame. Through the rotational engagement of the moving block and the rotating rod, a pull-back action is achieved, causing the expansion plates to close together, and the bottom conical expansion plates of the expansion plates to fit together. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a muscle retraction device for thyroid surgery proposed in this invention; Figure 2 This is a disassembly diagram of the cone-shaped expansion plate of a muscle retractor for thyroid surgery proposed in this invention; Figure 3 This is an end side view of a muscle retractor device for thyroid surgery proposed in this invention; Figure 4 This invention provides a muscle retractor for thyroid surgery. Figure 1 Enlarged view of point A in the image; Figure 5 This is a structural diagram showing the horizontal plate and bidirectional screw of a muscle stretching device for thyroid surgery proposed in this invention. Figure 6 This invention provides a muscle retractor for thyroid surgery. Figure 5 Enlarged view of point B in the image.

[0019] Among them, 1. Concave frame; 101. Rotating rod; 102. Rotating shaft; 103. Moving block; 2. Spreading plate; 201. L-shaped block; 202. Conical expansion plate; 203. T-shaped block; 3. Limiting slide rod; 301. Fixing plate; 4. Horizontal plate; 401. Connecting rod; 5. Threaded sleeve; 6. Two-way screw; 601. Knob; 7. Fixing column; 701. Pin hole; 702. Limiting insertion rod; 703. Through hole; 704. Pin rod; 705. Slot. Detailed Implementation

[0020] 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.

[0021] Example: like Figure 1-6 As shown, this embodiment of the invention provides a muscle retractor for thyroid surgery, including a concave frame 1. The concave frame 1 has an opening groove inside, and a movable block 103 is slidably fitted inside the opening groove. A connecting rod 401 is provided at one end of the movable block 103. During movement, the connecting rod 401 can move the movable block 103 towards the end position of the concave frame 1, thereby achieving a pull-back effect through the rotational engagement of the movable block 103 and the rotating rod 101. One end of the connecting rod 401 penetrates the outside of the concave frame 1, and a horizontal plate 4 is fixedly connected to the end of the connecting rod 401 away from the movable block 103. During movement, the horizontal plate 4 and the connecting rod 401 can both move outwards. When the connecting rod 401 moves, it can move the movable block 103 towards the end position of the concave frame 1, and the horizontal plate... 4. A threaded sleeve 5 is fixedly connected to one end away from the connecting rod 401. A double-ended screw 6 is connected to the internal thread of the threaded sleeve 5. By rotating the knob 601 in the forward direction, the double-ended screw 6 and the threaded sleeve 5 are brought together by the threads. At this time, the horizontal plate 4 is close to the concave frame 1. There are two concave frames 1. The concave frames 1 adopt a segmented structure, which makes it convenient for medical staff to perform surgical operations at the opening between the concave frames 1 to prevent affecting the surgical situation. A spreading plate 2 is set on both sides between the two concave frames 1. The outer L-shaped block 201 of the spreading plate 2 abuts against the inner wall of the muscle opening. The same operation method can be used to expand and open the spreading plate 2 again. The rear ends of the spreading plate 2 and both sides of the moving block 103 are fixedly connected to the rotating shaft 102. A rotating rod 101 is rotatably connected between the rotating shafts 102.

[0022] In a preferred embodiment: a T-shaped groove is provided at the bottom end of the expansion plate 2, and a T-shaped block 203 is inserted into the inside of the T-shaped groove. The T-shaped block 203 slides with the bottom wall of the expansion plate 2. Then, the pointed cone expansion plate 202 is disassembled from the overall structure of the expansion plate 2. The bottom end of the T-shaped block 203 is fixedly connected to the pointed cone expansion plate 202. After cutting, the pointed cone expansion plate 202 is inserted into the inside of the skin and flesh tissue.

[0023] In a preferred embodiment: a fixing plate 301 is fixedly connected to the top center of the concave frame 1 and one end of the expansion plate 2. A limiting slide rod 3 passes through the inside of the fixing plate 301. The limiting slide rod 3 limits the expansion plates 2 on both sides, so that the expansion and retraction can only be achieved at the middle position. At this time, the expansion plates 2 are close together, and the bottom cone expansion plate 202 of the expansion plate 2 is in contact with each other. Both ends of the limiting slide rod 3 are fixedly connected to a limiting plate.

[0024] In a preferred embodiment: an L-shaped block 201 is fixedly connected to the outer side of the expansion plate 2. When the muscle opening is large, the L-shaped block 201 can be used to resist the muscle. A knob 601 is fixedly connected to the middle of the bidirectional screw 6. When the knob 601 is rotated in the opposite direction, its threaded sleeve 5 is threadedly engaged with the bidirectional screw 6, so as to realize the operation of moving the threaded sleeve 5 to the end.

[0025] In a preferred embodiment: the movable block 103 has a through hole 703 inside, a fixing post 7 is fixedly connected inside the through hole 703, a limit plug 702 is fixedly connected to the middle of one end of the fixing post 7, and a slot 705 and a protrusion are provided on the outside of the fixing post 7.

[0026] In a preferred embodiment: the limiting rod 702, the slot 705, and the protrusion are all inserted into the connecting rod 401. The connecting rod 401 and the limiting rod 702 are all provided with pin holes 701. A pin 704 passes through the moving block 103, the pin hole 701, and the limiting rod 702. The pin 704 is pulled out through the strip-shaped opening groove on the upper surface of the concave frame 1. After being pulled out, the pin 704 will be separated from the moving block 103, the limiting rod 702, and the connecting rod 401.

[0027] In a preferred embodiment, the pointed cone expansion plate 202 is arc-shaped and has a pointed cone shape at the bottom. The pointed cone expansion plate 202 is made of hard rubber.

[0028] A method for operating a muscle retractor device used in thyroid surgery includes the following specific operating steps: Step 1: Before use, rotate the knob 601 in the opposite direction to engage the threaded sleeve 5 with the double screw 6, so that the threaded sleeve 5 can move to the end. During the movement, the horizontal plate 4 and the connecting rod 401 can move outward. When the connecting rod 401 moves, it can move the moving block 103 to the end position of the concave frame 1. Thus, the moving block 103 and the rotating rod 101 rotate to complete the pull-back action. Since the limiting slide rod 3 limits the opening plates 2 on both sides, it can only achieve the expansion and retraction of the middle position. At this time, the opening plates 2 are close together, and the bottom cone expansion plate 202 of the opening plate 2 is in contact with each other. Step Two: Medical staff perform thyroid surgery on the patient, cutting open the skin and flesh tissue. After cutting, the conical expansion plate 202 is inserted into the inside of the skin and flesh tissue. Then, by rotating the knob 601 forward, the bidirectional screw 6 and the threaded sleeve 5 are brought together. At this time, the horizontal plate 4 is close to the concave frame 1. During the approach, the position of the moving block 103 can be moved to provide rotational support for the rotating rod 101. Again, due to the limitation of the limiting slide rod 3, the expansion plate 2 can be expanded outward. At this time, the conical expansion plate 202 is in contact with the muscle opening and expands, thereby achieving the expansion and support function. Furthermore, the concave frame 1 adopts a segmented structure, which makes it convenient for medical staff to perform surgical operations at the openings between the concave frames 1, preventing any impact on the surgical situation. Step 3: When the muscle opening is large, L-shaped block 201 can be used to resist the muscle. At this time, T-shaped block 203 and bottom wall of expansion plate 2 slide. Then, the pointed cone expansion plate 202 is disassembled from the overall structure of expansion plate 2. Then, the outer L-shaped block 201 of expansion plate 2 abuts against the inner wall of the muscle opening. Using the same operation method, expansion plate 2 can be expanded again. Step 4: When it is necessary to disassemble and disinfect the overall structure, the pin 704 inside the strip-shaped opening groove on the upper surface of the concave frame 1 can be pulled out. After being pulled out, the pin 704 will be separated from the moving block 103, the limiting pin 702 and the connecting rod 401. At this time, the connecting rod 401 and the fixing post 7 are connected by a plug. Then, turn the knob 601 to disengage the threaded sleeve 5 from the double-ended screw 6, thus completing the disassembly and removal of the horizontal plate 4, the threaded sleeve 5 and the connecting rod 401, which is convenient for disinfection.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A muscle retractor device for thyroid surgery comprising a concave frame (1), characterized in that: The inside of the concave frame (1) is provided with an opening slot, the inside of the opening slot is slidably connected with a moving block (103), one end of the moving block (103) is provided with a connecting rod (401), one end of the connecting rod (401) penetrates through the outside of the concave frame (1), the end of the connecting rod (401) away from the moving block (103) is fixedly connected with a horizontal plate (4), the end of the horizontal plate (4) away from the connecting rod (401) is fixedly connected with a threaded sleeve (5), the inside of the threaded sleeve (5) is threadedly connected with a bidirectional screw rod (6), the number of the concave frame (1) is two, both sides of the two concave frames (1) are provided with a strutting plate (2), both ends of the rear side of the strutting plate (2) and both sides of the moving block (103) are fixedly connected with a rotating shaft (102), the rotating shaft (102) is rotatably connected with a rotating rod (101).

2. A muscle retractor device for thyroid surgery as claimed in claim 1, wherein: The bottom end of the strutting plate (2) is provided with a T-shaped slot, the inside of the T-shaped slot is inserted with a T-shaped block (203), the bottom end of the T-shaped block (203) is fixedly connected with a sharp cone expansion strutting plate (202).

3. The muscle retractor for thyroid surgery as claimed in claim 1 wherein: The top end of the concave frame (1) and one end of the strutting plate (2) are fixedly connected with a fixed plate (301), the inside of the fixed plate (301) penetrates through a limiting slide rod (3), both ends of the limiting slide rod (3) are fixedly connected with a limiting disc.

4. The muscle retractor for thyroid surgery as claimed in claim 1 wherein: The outside of the strutting plate (2) is fixedly connected with an L-shaped block (201), the middle of the bidirectional screw rod (6) is fixedly connected with a knob (601).

5. The muscle retractor for thyroid surgery as claimed in claim 1 wherein: The inside of the moving block (103) is provided with a through hole (703), the inside of the through hole (703) is fixedly connected with a fixed column (7), the middle of one end of the fixed column (7) is fixedly connected with a limiting plug rod (702), the outside of the fixed column (7) is provided with a clamping groove (705) and a protruding block.

6. A muscle retractor for thyroid surgery according to claim 5, characterized in that: The limiting plug rod (702), the clamping groove (705) and the protruding block are all insertedly connected with the connecting rod (401), the connecting rod (401) and the limiting plug rod (702) are both provided with a bolt hole (701), the moving block (103), the bolt hole (701) and the limiting plug rod (702) are all penetrated through with a bolt rod (704).

7. A muscle retractor for thyroid surgery as claimed in claim 2 wherein: The sharp cone expansion strutting plate (202) is arranged in an arc shape, and the bottom is in a sharp cone shape, the sharp cone expansion strutting plate (202) is made of hard rubber material.

8. A method of operating a muscle retractor for thyroid surgery, according to any one of claims 1-7, characterized in that: The following specific operation method is included: Step one: reverse rotation of the knob (601) before use, the threaded sleeve (5) and the two-way screw rod (6) threaded cooperation, realize the threaded sleeve (5) to the end of the moving operation, and in the moving process can drive the horizontal plate (4) and connecting rod (401) are moving to the outside, when the connecting rod (401) in the moving process can be moved to the end of the recess frame (1) of the moving block (103), thus through the moving block (103) and rotating rod (101) rotation cooperation, complete the pullback effect, because the limiting slide rod (3) to both sides of the opening plate (2) play a limit, only to achieve the expansion and recovery of the middle position, at this time the opening plate (2) close, and the bottom of the opening plate (2) of the sharp taper expansion plate (202) is attached; Step two: medical staff to patients with thyroid surgery operation, cut open the flesh tissue, after cutting open the sharp taper expansion plate (202) is inserted into the inside of the flesh tissue, then through the knob (601) positive rotation, the two-way screw rod (6) and threaded sleeve (5) realize threaded close, at this time the horizontal plate (4) and the recess frame (1) close, in the close process can be moved through the position of the moving block (103), will realize the rotation support of the rotating rod (101), again because of the limiting of the limiting slide rod (3), can realize the expansion of the opening plate (2) to the outside, at this time because the sharp taper expansion plate (202) and muscle opening resistance expansion, so as to achieve the expansion support effect, and the recess frame (1) adopts the segmented structure, which is convenient for medical staff to operate in the opening between the recess frame (1), to prevent affecting the operation situation; Step three: when the muscle opening is larger, the L-shaped block (201) can be used to resist the muscle, at this time the T-shaped block (203) and the opening plate (2) bottom wall slide, then the sharp taper expansion plate (202) is detached from the opening plate (2) integral structure to complete the disassembly, then the outside L-shaped block (201) of the opening plate (2) is in contact with the inner wall of the muscle opening, and the same operation method can expand the opening plate (2) again; Step four: when the overall structure needs to be disassembled and sterilized, the plug pin rod (704) in the upper surface of the recess frame (1) can be pulled out, the plug pin rod (704) pulled out will be separated from the moving block (103), the limiting plug rod (702) and the connecting rod (401), at this time the connecting rod (401) and the fixed column (7) are inserted structure, then rotate the knob (601), the threaded sleeve (5) and the two-way screw rod (6) are threaded, that is, the horizontal plate (4), the threaded sleeve (5) and the connecting rod (401) are disassembled, which is convenient for disinfection.

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