Chest opener for mice

Abstract

The invention discloses a chest opener for mice, and belongs to the technical field of experimental instruments. The chest opening device comprises two control arms which are rotationally connected, a control ring is arranged at the tail end of each control arm, and a locking assembly is arranged on the chest opening device and used for fixing the rotating angle. The front end of the control arm is connected with the poking assembly, the poking assembly comprises a main body block, a control rod and an L-shaped poking hook, the rotation angle of the poking hook is adjusted through the control button, and the angle of the poking hook is locked by rotating the locking button. A groove is formed in the main body block, and the rotation range of the shifting hook is limited within 30 degrees through the groove. Through the design of the L-shaped shifting hook with the adjustable angle, tissue resistance can be effectively reduced, different operation field requirements can be met, passive expansion of the thoracotomy range is avoided, operation wounds and complication risks are reduced, and the device is suitable for mouse experiment operation.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental instruments, in particular to a chest opener for mice. Background Art

[0002] During experiments on mice, a thoracotomy is used to expand the mouse's tissues and expose the surgical area. However, existing surgical thoracotomies have significant limitations during experimental operations. The front end of existing mouse thoracotomies uses a double-arc structure. In practice, to fully enter the chest cavity, the thoracotomy often requires passive expansion. This not only increases the risk of surgical trauma but can also cause complications such as pneumothorax and rib fractures. To address these issues, the present invention provides a thoracotomy for mice. Summary of the Invention

[0003] The present invention aims to provide a thoracotomy for mice to solve the problem that existing thoracotomies cannot adapt to different surgical field requirements, thereby passively increasing the thoracotomy range and increasing the risk of trauma.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A chest opener for mice, comprising two control arms, the two control arms being rotatably connected, the tail ends of the two control arms being connected to a control ring, a locking assembly being provided between the two control arms, the locking assembly being used to lock the rotation angles of the two control arms, the front ends of the two control arms being connected to a prying assembly, the prying assembly comprising a main body block, the interior of the main body block being rotatably connected to a control rod, one end of the control rod being passed to the outside and connected to a control button, a plurality of rotating blocks being connected to the control rod, the plurality of rotating blocks being connected to a prying hook, the prying hook being an L-shaped structure, and a plurality of Slots, the number of slots is equal to the number of hooks, and the slots are used to limit the rotation angle range of the hooks. Threaded rods and limit rods are provided on both sides of the control rod. The threaded rod is rotatably connected to the inside of the main block, and the limit rod is fixedly connected to the inside of the main block. The top of the threaded rod is connected to a locking button, and the locking button is located outside the main block. Two locking plates are threaded on the threaded rod, and the limit rod is passed through the two locking plates. The threaded rod is provided with a positive thread and a negative thread, and the positive thread and the negative thread have opposite rotation directions. One locking plate is threadedly connected to the positive thread, and the other locking plate is threadedly connected to the negative thread.

[0006] Furthermore, one side of the pushing-away assembly is provided with four pushing hooks, and the other side of the pushing-away assembly is provided with three pushing hooks, and the positions of the pushing hooks on both sides are alternately arranged.

[0007] Furthermore, the slot limits the rotation range of the pull hook to within 30°.

[0008] Furthermore, both locking plates are provided with notches, and the notches are used to contact the control rod.

[0009] Furthermore, a friction pattern is provided on the control rod, and the friction pattern is used to increase the friction between the control rod and the locking plate.

[0010] The principle and beneficial effects of the present technical solution: The draw hook in the device of the present invention is an L-shaped vertical structure, while most of the prior art structures are arc-shaped structures. By changing the arc-shaped structure to a vertical structure, the tissue resistance during insertion of the draw hook can be effectively reduced. The draw hook of the device of the present invention can be adjusted in angle, and the angle of the draw hook can be changed by turning the control knob. After determining the angle, the two locking plates are brought close to each other by turning the locking knob, and the control rod is clamped and fixed, and the angle of the draw hook is locked by friction. By setting the adjustable angle, it can be applicable to situations with different retraction ranges and can accurately adapt to the needs of different surgical fields of view. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of the device of the present invention with components removed;

[0013] Figure 3 This is an internal cross-sectional view of the components of the device of the present invention;

[0014] Figure 4 This is a diagram showing the internal structure of the components of the device of the present invention;

[0015] In the figure: 1. Control arm; 2. Disengagement assembly; 3. Main body; 4. Control rod; 5. Rotation block; 6. Threaded rod; 7. Limit rod; 8. Locking plate; 11. Control ring; 12. Locking assembly; 31. Slot; 41. Control button; 42. Friction pattern; 51. Disengagement hook; 61. Locking button; 62. Positive thread; 63. Negative thread; 81. Notch. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] like Figure 1-4The chest opener for mice shown in the figure comprises two control arms 1, which are rotatably connected to each other, and the rotation axis is set in the middle of the control arm 1. The tail end of the control arm 1 is connected to the control ring 11, and the relative rotation between the two control arms 1 is controlled by the control ring 11. A locking component 12 is set between the two control arms 1. The locking component 12 is used to lock the angle after the two control arms 1 are rotated to a certain angle. In this embodiment, the locking component 12 adopts the method commonly used in the prior art: a curved bar with a sawtooth is connected to a control arm. On the control arm 1, the arc-shaped strip passes through another control arm 1, and the other control wall is rotatably connected to a control handle, which is also provided with serrations; the front ends of the control arms 1 on both sides are connected to a prying assembly 2, which includes a main body block 3, and the internal rotation of the main body block 3 is connected to a control rod 4, one end of the control rod 4 is passed through the outside of the main body block 3 and connected to the control button 41, and the control rod 4 is coaxially connected to the rotating block 5, and the main body block 3 on the left is provided with four rotating blocks 5, and the main body block 3 on the right is provided with three rotating blocks 5, and the rotating blocks 5 are all connected to the prying hook 5 1. The pull hook 51 is an L-shaped structure. A slot 31 is provided on the main body block 3. The slot 31 connects the inside of the main body block 3 with the outside. The pull hook 51 is restricted inside the slot 31. The angle at which the pull hook 51 can rotate is limited to within 30 degrees. The slots 31 on the main body blocks 3 on both sides are arranged alternately. The left and right sides of the control rod 4 inside the main body block 3 are respectively provided with a threaded rod 6 and a limit rod 7. The threaded rod 6 is rotatably connected to the inside of the main body block 3, and the limit rod 7 is fixedly connected to the inside of the main body block 3. The top end of the threaded rod 6 passes through the outside of the main body block 3 and is connected to the locking button 61. The threaded rod 6 is provided with a positive thread 62 and a negative thread 63, and the two threads rotate in opposite directions. Two locking plates 8 are respectively provided on the upper and lower sides of the control rod 4. The left side of the locking plate 8 is threadedly connected to the threaded rod 6, and the right side of the locking plate 8 is penetrated by the limiting rod 7, and the upper and lower locking plates 8 are threadedly connected to the positive thread 62 and the negative thread 63 respectively. A notch 81 is provided on the locking plate 8, and the control rod 4 is provided with a friction pattern 42 at a position vertical to the notch 81. The friction pattern 42 is used to increase the friction between the locking plate 8 and the control rod 4.

[0018] The specific implementation process is as follows: first, adjust the prying component 2 according to the type of surgery on the mouse and the size of the surgical area, turn the control button 41, and the control button 41 drives the control rod 4 to rotate, so that the prying hook 51 rotates, thereby adjusting the rotation angle of the prying hook 51. After the adjustment is completed, the current state of the prying hook 51 needs to be locked, and the locking button 61 is turned to drive the threaded rod 6 to rotate. Since the two ends of the threaded rod 6 have opposite rotation directions, the two locking plates 8 are close to each other and contact the control rod 4. The friction pattern 42 on the control rod 4 contacts the locking plate 8, and the control rod 4 is locked by friction. After the rotation angle of the prying hook 51 is locked, the chest opener can be used to open the chest.

[0019] The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions or characteristics in the solution is not described in detail here. For those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A chest opener for mice, characterized in that: The invention comprises two control arms (1), the two control arms (1) are rotatably connected to each other, the tail ends of the two control arms (1) are connected to a control ring (11), a locking assembly (12) is provided between the two control arms (1), the locking assembly (12) is used to lock the rotation angle of the two control arms (1), the front ends of the two control arms (1) are connected to a prying assembly (2), the prying assembly (2) comprises a main body block (3), the main body block (3) is internally rotatably connected to a control rod (4), one end of the control rod (4) is passed through to the outside and connected to a control button (41), the control rod (4) is connected to a plurality of rotating blocks (5), the plurality of rotating blocks (5) are connected to a prying hook (51), the prying hook (51) is an L-shaped structure, the main body block (3) is provided with a plurality of slots (31), the number of the slots (31) is equal to the number of the prying hooks (51). The slot (31) is used to limit the rotation angle range of the pull hook (51), and threaded rods (6) and limiting rods (7) are provided on both sides of the control rod (4). The threaded rod (6) is rotatably connected to the inside of the main body block (3), and the limiting rod (7) is fixedly connected to the inside of the main body block (3). The top of the threaded rod (6) is connected to a locking button (61), and the locking button (61) is located outside the main body block (3). Two locking plates (8) are threadedly connected to the threaded rod (6), and the limiting rod (7) is penetrated by two locking plates (8). The threaded rod (6) is provided with a positive thread (62) and a negative thread (63), and the positive thread (62) and the negative thread (63) have opposite thread rotation directions. One locking plate (8) is threadedly connected to the positive thread (62), and the other locking plate (8) is threadedly connected to the negative thread (63).

2. A chest opener for mice according to claim 1, characterized in that: The pushing assembly (2) on one side is provided with four pushing hooks (51), and the pushing assembly (2) on the other side is provided with three pushing hooks (51), and the positions of the pushing hooks (51) on both sides are alternately arranged.

3. A chest opener for mice according to claim 1, characterized in that: The slot (31) limits the rotation range of the pull hook (51) to within 30°.

4. The chest opener for mice according to claim 1, characterized in that: Both locking plates (8) are provided with a notch (81), and the notch (81) is used to contact the control rod (4).

5. The chest opener for mice according to claim 1, characterized in that: The control rod (4) is provided with a friction pattern (42), and the friction pattern (42) is used to increase the friction between the control rod (4) and the locking plate (8).

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