Head fixator for thyroid surgery

Abstract

The utility model relates to a head fixator for thyroid surgery, which is characterized in that a first frame is rotatably arranged on a support, a second frame capable of being telescopically adjusted is arranged on one side of the first frame, and a second skull nail and a first skull nail capable of being movably adjusted are respectively mounted on the first frame and the second frame; a main shaft is rotationally installed on the support, the first frame is rotationally installed on the main shaft, the main shaft is matched with the second cranial nail through a linkage structure, and when the main shaft rotates, the second cranial nail is driven to move horizontally through the linkage structure, so that the head is fixed between the second cranial nail and the first cranial nail; the support is further provided with a rotary locking assembly used for locking the first frame when the main shaft rotates. According to the head fixing device, the head can be well fixed, the stability is good, meanwhile, the head fixing position and the backward leaning degree can be adjusted, and the head fixing device can be suitable for fixing heads with different head diameters through the second frame capable of being adjusted in a telescopic mode.

Description

Technical Field

[0001] The utility model relates to a head fixator for thyroid surgery. Background Technique

[0002] When a serious thyroid lesion occurs, a thyroidectomy needs to be performed. There are usually two types of thyroidectomies. One is to completely remove one side of the thyroid gland, rather than both lobes of the thyroid gland, which is one type of thyroidectomy; the other is partial resection, often retaining all or part of the thyroid tissue on the contralateral side to maintain the required physiological functions.

[0003] When performing a thyroidectomy, the patient's head needs to be firmly fixed, and in order to facilitate the surgical operation, the patient needs to maintain a certain body position. Usually, the patient is kept in the supine position, the patient's shoulders are elevated, the head is tilted backward to fully expose the neck, and small sandbags are used to squeeze and fix both sides of the head to prevent the head from moving left and right during the operation and contaminating the incision.

[0004] Although the above-mentioned common method has a simple structure and can achieve a certain head fixation effect, there are still some disadvantages in the above-mentioned method: First, when tilting the patient's head backward, pillows or the like are needed to pad the shoulders. On the one hand, the stability is poor, and on the other hand, it is difficult to adjust the degree of head tilt backward; Second, when using small sandbags to squeeze both sides of the patient's head, since the sandbags are not flexible in changing shape and the sandbags are prone to move, the fixation function on both sides of the patient's head is poor. Content of the Utility Model

[0005] The purpose of the utility model is to provide a head fixator for thyroid surgery to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A head fixator for thyroid surgery includes a frame, a vertical beam and a support arm arranged above the frame. The vertical beam can slide on the frame through a slide rail assembly, and the support arm is unidirectionally rotatably connected to the vertical beam through a unidirectional rotation assembly;

[0008] One end of the support arm is fixed with a bracket, a first frame is rotatably arranged on the bracket, a second frame with telescopic adjustment is arranged on one side of the first frame, and second cranial nails and first cranial nails with movable adjustment are respectively installed on the first frame and the second frame, and the second cranial nails and the first cranial nails are used for fixing the head;

[0009] The bracket is rotatably mounted with a main shaft via a bearing, the first frame is rotatably mounted on the main shaft, the main shaft and the second skull pin are matched via a linkage structure, when the main shaft rotates, the second skull pin is driven to move horizontally via the linkage structure, so that the skull is fixed between the second skull pin and the first skull pin;

[0010] The bracket is also provided with a rotation locking assembly for locking the first frame when the main shaft rotates.

[0011] A head fixator for thyroid surgery as described above: the slide rail assembly includes a slide rail fixed on a frame and a slider fixed on the bottom of a vertical beam, and the slider is slidably connected to the slide rail.

[0012] A head fixator for thyroid surgery as described above: the one-way rotating component includes a sleeve fixed on a vertical beam, a first triangular tooth is fixed on the sleeve, a connecting rod is rotatably installed in the sleeve through a bearing, the connecting rod is fixed to a supporting arm, a spring and a ring are sequentially sleeved on the connecting rod from right to left, a second triangular tooth meshing with the first triangular tooth is fixed on the ring, a first key strip is fixed on the inner wall of the ring, a first key slot is opened on the connecting rod, and the first key strip is movably engaged and clamped in the first key slot.

[0013] A head fixator for thyroid surgery as described above: a slot is provided in the first frame, the second frame is slidably engaged in the slot, a limiting slot is provided on the second frame for the main shaft to pass through, and a locking bolt is threadedly connected on the first frame for locking the first frame and the second frame after the second frame is engaged in the first frame.

[0014] A head fixator for thyroid surgery as described above: the linkage structure includes a secondary shaft rotatably mounted on the first frame through a bearing, a driving bevel gear fixed to one end of the main shaft, and a driven bevel gear fixed to one end of the secondary shaft and meshing with the driving bevel gear, the second cranial pin is rotatably connected to a second screw rod threadedly connected to a thread groove provided on the first frame through a bearing, an insertion rod is fixed to one end of the second screw rod, and the insertion rod is transmission-connected to the secondary shaft through a transmission mechanism;

[0015] The transmission mechanism comprises a second pulley fixed to one end of the insertion rod and rotatably mounted on one side of the first frame through a bearing, and a first pulley fixed to one end of the secondary shaft, wherein the first pulley and the second pulley are connected via a belt transmission;

[0016] A second key slot is provided inside the second pulley, a second key strip is fixed on the insertion rod, and the second key strip is engaged and snapped into the second key slot;

[0017] A first screw rod threadably connected to a thread groove provided on the second frame is fixed at one end of the first skull pin.

[0018] A head fixator for thyroid surgery as described above: the rotation locking assembly includes an arc-shaped plate fixed on a first frame and a sleeve rotatably mounted on a bracket through a bearing, an inner rod is inserted in the sleeve, a third screw rod threadedly connected to a thread groove provided on the bracket is fixed at one end of the inner rod, a key is fixed on the inner rod, a key groove that cooperates with the key is provided in the sleeve, and the sleeve is connected to the main shaft through a gear transmission mechanism.

[0019] In the head fixator for thyroid surgery as described above, the gear transmission mechanism comprises a driving gear fixed on the main shaft and a driven gear fixed on the shaft sleeve, and the driving gear and the driven gear are meshingly connected.

[0020] Compared with the prior art, the utility model has the following beneficial effects: a first frame is rotatably arranged on the bracket, a telescopically adjustable second frame is arranged on one side of the first frame, and a movably adjustable second skull pin and a first skull pin are respectively installed on the first frame and the second frame, and the second skull pin and the first skull pin are used to fix the head;

[0021] A main shaft is rotatably mounted on the bracket through a bearing, and the first frame is rotatably mounted on the main shaft. The main shaft and the second skull pin are matched through a linkage structure. When the main shaft rotates, the second skull pin is driven to move horizontally through the linkage structure, so that the skull is fixed between the second skull pin and the first skull pin.

[0022] A rotation locking assembly is also provided on the bracket for locking the first frame when the main shaft rotates;

[0023] Therefore, the utility model can achieve a good fixing effect on the head during thyroid surgery, and has good stability. At the same time, the vertical beam is slid on the frame by the slide rail assembly, and the support arm is connected to the vertical beam by a one-way rotation assembly to adjust the position of the head fixation and the degree of backward tilt. In addition, the telescopically adjustable second frame can be used to fix heads of different head diameters, and has a good fixing effect and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a first-person structural diagram of a head fixator for thyroid surgery.

[0025] Figure 2 This is a second-view structural diagram of a head fixator for thyroid surgery.

[0026] Figure 3 The present invention is a schematic structural diagram of a one-way rotating component of a head fixator for thyroid surgery.

[0027] Figure 4Schematic diagram of the structure after removing the frame, vertical beam, and support arm of a head fixator for a thyroid surgery.

[0028] Figure 5 It is Figure 4 explosion structure schematic diagram of.

[0029] Figure 6 Schematic diagram of the structure of the insertion rod and the second pulley of a head fixator for a thyroid surgery.

[0030] In the figure: 1, frame; 2, vertical beam; 3, slide rail assembly; 301, slide rail; 302, slider; 4, one-way rotation assembly; 401, sleeve; 402, first triangular tooth; 403, connecting rod; 404, collar; 405, second triangular tooth; 406, spring; 407, first key strip; 408, first keyway; 5, support arm; 6, bracket; 7, first frame; 8, second frame; 9, first cranial nail; 10, second cranial nail; 11, main shaft; 12, first lead screw; 13, second lead screw; 14, linkage structure; 1401, auxiliary shaft; 1402, driven bevel gear; 1403, driving bevel gear; 1404, first pulley; 1405, second pulley; 1406, belt; 1407, insertion rod; 1408, second keyway; 1409, second key strip; 15, rotation locking assembly; 1501, driving gear; 1502, inner rod; 1503, third lead screw; 1504, driven gear; 1505, bushing; 1506, arc plate; 16, card slot; 17, limit slot. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0032] Please refer to Figures 1 to 6 , as an embodiment of the present utility model, a head fixator for a thyroid surgery includes a frame 1, a vertical beam 2 disposed above the frame 1, and a support arm 5. The vertical beam 2 can slide on the frame 1 through a slide rail assembly 3, and the support arm 5 is unidirectionally rotatably connected to the vertical beam 2 through a one-way rotation assembly 4;

[0033] One end of the support arm 5 is fixed with a bracket 6. A first frame 7 is rotatably disposed on the bracket 6. A second frame 8 that can be telescopically adjusted is disposed on one side of the first frame 7. Movable and adjustable second cranial nails 10 and first cranial nails 9 are respectively installed on the first frame 7 and the second frame 8. The second cranial nails 10 and the first cranial nails 9 are used for fixing the head;

[0034] A main shaft 11 is rotatably mounted on a bracket 6 through a bearing. A first frame 7 is rotatably mounted on the main shaft 11. The main shaft 11 and a second cranial nail 10 are cooperated through a linkage structure 14. When the main shaft 11 rotates, the second cranial nail 10 is driven by the linkage structure to move horizontally, so that the head is fixed between the second cranial nail 10 and the first cranial nail 9.

[0035] A rotation locking assembly 15 is further arranged on the bracket 6 for locking the first frame 7 when the main shaft 11 rotates.

[0036] In this embodiment, the first frame 7 is rotatably arranged on the bracket 6, and a second frame 8 which is telescopically adjustable is arranged on one side of the first frame 7. Second cranial nails 10 and first cranial nails 9 which are movably adjustable are respectively mounted on the first frame 7 and the second frame 8, and the second cranial nails 10 and the first cranial nails 9 are used for fixing the head.

[0037] A main shaft 11 is rotatably mounted on a bracket 6 through a bearing. A first frame 7 is rotatably mounted on the main shaft 11. The main shaft 11 and a second cranial nail 10 are cooperated through a linkage structure 14. When the main shaft 11 rotates, the second cranial nail 10 is driven by the linkage structure to move horizontally, so that the head is fixed between the second cranial nail 10 and the first cranial nail 9.

[0038] A rotation locking assembly 15 is further arranged on the bracket 6 for locking the first frame 7 when the main shaft 11 rotates.

[0039] Meanwhile, the vertical beam 2 slides on the frame 1 through the slide rail assembly 3, and the support arm 5 is unidirectionally rotatably connected to the vertical beam 2 through a unidirectional rotation assembly 4 to adjust the position of the head fixation and the degree of backward tilt, and the telescopically adjustable second frame 8 can be used for fixing heads with different head diameters.

[0040] As a further solution of the utility model, the slide rail assembly 3 includes a slide rail 301 fixed on the frame 1 and a slider 302 fixed at the bottom of the vertical beam 2, and the slider 302 is slidably clamped on the slide rail 301.

[0041] In this embodiment, by slidably clamping the slider 302 on the slide rail 301, the vertical beam 2 can slide on the slide rail 301 so as to adjust the horizontal position of the vertical beam 2.

[0042] As a further solution of the utility model, the one-way rotation component 4 includes a sleeve 401 fixed on the vertical beam 2, a first triangular tooth 402 is fixed on the sleeve 401, a connecting rod 403 is rotatably installed in the sleeve 401 through a bearing, the connecting rod 403 is fixed to the supporting arm 5, a spring 406 and a ring 404 are sequentially sleeved on the connecting rod 403 from right to left, a second triangular tooth 405 meshing with the first triangular tooth 402 is fixed on the ring 404, a first key strip 407 is fixed on the inner wall of the ring 404, a first key groove 408 is opened on the connecting rod 403, and the first key strip 407 is movably engaged and clamped in the first key groove 408.

[0043] In this embodiment, the second triangular tooth 405 is tightly engaged with the first triangular tooth 402 by the elastic force of the spring 406, and the collar 404 is engaged with the connecting rod 403, so that the support arm 5 can be driven to rotate in one direction under the action of an external force without rotating back, and the rotation angle of the support arm 5 can be adjusted, so as to facilitate the adjustment of the degree of head tilting back;

[0044] In addition, the support arm 5 can be reset and adjusted by pressing the collar 404 to the right to separate the first triangular teeth 402 and the second triangular teeth 405.

[0045] As a further solution of the utility model, a slot 16 is provided in the first frame 7, and the second frame 8 is slidably engaged in the slot 16. A limiting slot 17 is provided on the second frame 8 for the main shaft 11 to pass through. A locking bolt is threadedly connected on the first frame 7 for locking the first frame 7 and the second frame 8 after the second frame 8 is engaged in the first frame 7.

[0046] In this embodiment, the second frame 8 is slidably engaged in the slot 16, so that the distance between the second frame 8 and the first frame 7 can be adjusted by changing the depth of the second frame 8 engaged in the slot 16, thereby facilitating the fixation of heads of different head diameters.

[0047] As a further solution of the utility model, the linkage structure 14 includes a secondary shaft 1401 rotatably mounted on the first frame 7 through a bearing, a driving bevel gear 1403 fixed to one end of the main shaft 11, and a driven bevel gear 1402 fixed to one end of the secondary shaft 1401 and meshing with the driving bevel gear 1403. The second cranial nail 10 is rotatably connected to a second screw rod 13 threadedly connected to a thread groove provided on the first frame 7 through a bearing, and an insertion rod 1407 is fixed to one end of the second screw rod 13. The insertion rod 1407 is connected to the secondary shaft 1401 through a transmission mechanism.

[0048] The transmission mechanism includes a second pulley 1405 fixed to one end of the insertion rod 1407 and rotatably mounted on one side of the first frame 7 through a bearing, and a first pulley 1404 fixed to one end of the secondary shaft 1401. The first pulley 1404 and the second pulley 1405 are connected by a belt 1406.

[0049] A second key groove 1408 is provided inside the second pulley 1405, a second key bar 1409 is fixed on the insertion rod 1407, and the second key bar 1409 is engaged and snapped into the second key groove 1408;

[0050] A first screw rod 12 threadably connected to a thread groove provided on the second frame 8 is fixed at one end of the first cranial pin 9 .

[0051] In this embodiment, the rotation of the main shaft 11 will drive the active bevel gear 1403 to rotate, thereby driving the driven bevel gear 1402 to rotate, and then driving the secondary shaft 1401 to rotate, thereby driving the first pulley 1404 to rotate, and then driving the second pulley 1405 to rotate, thereby driving the insertion rod 1407 to rotate synchronously, thereby driving the second screw rod 13 to rotate, thereby driving the second screw rod 13 to move horizontally, and then adjusting the horizontal position of the second skull pin 10.

[0052] As a further solution of the utility model, the rotary locking assembly 15 includes an arc-shaped plate 1506 fixed on the first frame 7 and a sleeve 1505 rotatably mounted on the bracket 6 through a bearing, an inner rod 1502 is inserted in the sleeve 1505, a third screw rod 1503 threadedly connected to a thread groove provided on the bracket 6 is fixed at one end of the inner rod 1502, a key is fixed on the inner rod 1502, a key groove is provided in the sleeve 1505 to engage with the key, and the sleeve 1505 is connected to the main shaft 11 through a gear transmission mechanism.

[0053] The gear transmission mechanism includes a driving gear 1501 fixed on the main shaft 11 and a driven gear 1504 fixed on the shaft sleeve 1505 , and the driving gear 1501 and the driven gear 1504 are meshingly connected.

[0054] In this embodiment, when the main shaft 11 rotates, it drives the driving gear 1501 to rotate and then drives the driven gear 1504 to rotate, thereby mobilizing the sleeve 1505 to rotate, thereby driving the inner rod 1502 to rotate and then driving the third screw rod 1503 to rotate, thereby driving the third screw rod 1503 to move horizontally, so that the third screw rod 1503 is pressed against the arc plate 1506 to rotate and adjust the first frame 7 and then lock it.

[0055] The working principle of this utility model is as follows: First, fix the frame 1 on the ground. The slider 302 is slidably clamped on the slide rail 301, and the vertical beam 2 can slide on the slide rail 301 to adjust the horizontal position of the vertical beam 2. Then, under the action of an external force, the support arm 5 is driven to rotate unidirectionally, and then the rotation angle of the support arm 5 is adjusted, so as to facilitate adjusting the degree of head backward tilt. Place the head between the first frame 7 and the second frame 8. The second cranial screw 10 and the first cranial screw 9 which are movably adjustable are respectively installed on the first frame 7 and the second frame 8. First, rotate the first frame 7 to make the head located between the first frame 7 and the second frame 8, and fix one side of the head through the first cranial screw 9. When the main shaft 11 rotates, the second cranial screw 10 is driven to move horizontally through the linkage structure, so that the skull is fixed between the second cranial screw 10 and the first cranial screw 9 to fix both sides of the head. When the main shaft 11 rotates, a rotation locking assembly 15 is arranged on the bracket 6 to lock the first frame 7 when the main shaft 11 rotates, to prevent the first frame 7 from deflecting.

[0056] The above embodiments are exemplary rather than restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, all technical solutions that can implement this utility model in other specific forms are included in this utility model.

Claims

1. A head fixator for thyroid surgery, comprising a frame (1), a vertical beam (2) and a support arm (5) arranged above the frame (1), characterized in that, The vertical beam (2) can slide on the frame (1) through a slide rail assembly (3), and the support arm (5) is unidirectionally rotatably connected to the vertical beam (2) through a unidirectional rotation assembly (4); One end of the support arm (5) is fixed with a bracket (6), a first frame (7) is rotatably arranged on the bracket (6), a second frame (8) with telescopic adjustment is arranged on one side of the first frame (7), a second cranial screw (10) and a first cranial screw (9) with movable adjustment are respectively installed on the first frame (7) and the second frame (8), and the second cranial screw (10) and the first cranial screw (9) are used for fixing the head; A main shaft (11) is rotatably installed on the bracket (6) through a bearing, the first frame (7) is rotatably installed on the main shaft (11), the main shaft (11) and the second cranial screw (10) are matched through a linkage structure (14), and when the main shaft (11) rotates, the second cranial screw (10) is driven to move horizontally through the linkage structure, so that the skull is fixed between the second cranial screw (10) and the first cranial screw (9); A rotation locking assembly (15) is further arranged on the bracket (6) for locking the first frame (7) when the main shaft (11) rotates.

2. The head fixator for a thyroid surgery according to claim 1, characterized in that, The slide rail assembly (3) includes a slide rail (301) fixed on the frame (1) and a slider (302) fixed at the bottom of the vertical beam (2), and the slider (302) is slidably clamped on the slide rail (301).

3. The head fixator for a thyroid surgery according to claim 1, wherein The unidirectional rotation assembly (4) includes a sleeve (401) fixed on the vertical beam (2), a first triangular tooth (402) is fixed on the sleeve (401), a connecting rod (403) is rotatably installed in the sleeve (401) through a bearing, the connecting rod (403) is fixed to the support arm (5), a spring (406) and a collar (404) are sequentially sleeved on the connecting rod (403) from right to left, a second triangular tooth (405) meshing with the first triangular tooth (402) is fixed on the collar (404), a first key bar (407) is fixed on the inner wall of the collar (404), a first key groove (408) is formed on the connecting rod (403), and the first key bar (407) is movably fitted and clamped in the first key groove (408).

4. The head fixator for a thyroid surgery according to claim 1, wherein, A clamping groove (16) is formed in the first frame (7), the second frame (8) is slidably clamped in the clamping groove (16), a limiting groove (17) for the main shaft (11) to pass through is formed on the second frame (8), and a locking bolt is threadedly connected to the first frame (7) for locking between the first frame (7) and the second frame (8) after the second frame (8) is clamped in the first frame (7).

5. The head fixator for thyroid surgery according to claim 1, characterized in that, The linkage structure (14) includes a secondary shaft (1401) rotatably mounted on the first frame (7) through a bearing, a driving bevel gear (1403) fixed to one end of the main shaft (11), and a driven bevel gear (1402) fixed to one end of the secondary shaft (1401) and meshing with the driving bevel gear (1403). A second lead screw (13) rotatably connected to the second cranial screw (10) through a bearing and threadedly connected to a threaded groove formed on the first frame (7) is provided. A plug rod (1407) is fixed to one end of the second lead screw (13), and the plug rod (1407) is drivingly connected to the secondary shaft (1401) through a transmission mechanism; The transmission mechanism includes a second pulley (1405) fixed to one end of the plug rod (1407) and rotatably mounted on one side of the first frame (7) through a bearing, and a first pulley (1404) fixed to one end of the secondary shaft (1401). The first pulley (1404) and the second pulley (1405) are drivingly connected through a belt (1406); A second keyway (1408) is formed inside the second pulley (1405), and a second key strip (1409) is fixed to the plug rod (1407). The second key strip (1409) is fitted and clamped in the second keyway (1408); A first lead screw (12) threadedly connected to a threaded groove formed on the second frame (8) is fixed to one end of the first cranial screw (9).

6. The head fixator for a thyroid surgery according to claim 1, characterized in that, The rotation locking assembly (15) includes an arc-shaped plate (1506) fixed to the first frame (7) and a bushing (1505) rotatably mounted on the bracket (6) through a bearing. An inner rod (1502) is inserted into the bushing (1505). A third lead screw (1503) threadedly connected to a threaded groove formed on the bracket (6) is fixed to one end of the inner rod (1502). A key is fixed to the inner rod (1502), and a keyway fitted and clamped with the key is formed inside the bushing (1505). The bushing (1505) and the main shaft (11) are drivingly connected through a gear transmission mechanism.

7. A head fixator for thyroid surgery according to claim 6, characterized in that, The gear transmission mechanism includes a driving gear (1501) fixed to the main shaft (11) and a driven gear (1504) fixed to the bushing (1505). The driving gear (1501) and the driven gear (1504) are meshed and connected.

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