A nerve traction protection device

Abstract

The present invention provides a nerve traction protection device, which relates to the field of nerve dissection protection. The adopted solution is as follows: It includes a traction rod and a handle. The handle includes a fixed handle and a locking handle that are hinged to each other. One end of the fixed handle is provided with the traction rod that can move up and down. The locking handle can lock the traction rod. A fastening bolt is threadedly connected to the fixed handle. The fastening bolt is perpendicular to the traction rod. The fastening bolt is located below the locking handle. The fastening bolt can abut against the working sleeve that is matched with the nerve traction protection device. The present invention can provide a large and stable acting force for locking and fastening the traction rod, is suitable for use in protecting nerves during traction in arthroscopic discectomy surgery, no longer requires manual holding, thereby reducing the working intensity of the surgeon, saving manpower, and improving the safety of the surgery at the same time.

Description

Technical Field

[0001] The present invention relates to the field of nerve dissection protection, and particularly to a nerve traction protection device. Background Art

[0002] Surgery for lumbar disc herniation is carried out within a working cannula. When operating on the lumbar disc herniation lesion, it is necessary to dissect and protect the dura mater and nerves. In the prior art, after the dura mater and nerves are dissected, they are pulled by a nerve retractor by the manpower of the surgical assistant. When the operation time is long and the manpower for pulling the nerves is fatigued, the pulling force will be improper, which will affect the normal progress of the operation and even cause nerve damage. To solve this problem, a Chinese invention patent with the application number 201110252413.5 discloses a nerve traction protector, which uses a positioning needle for positioning and a connecting and locking mechanism to fasten the protector on the working cannula, eliminating the need for manual pulling of the nerves. However, in this solution, the upper and lower position locking of the protector and the fastening of the handle on the working cannula are both realized by a connecting and locking mechanism with a spring. When a larger nerve such as the main nerve needs to be pulled, the main nerve has a large reaction force on the protector, causing the spring to be compressed by the acting force, and the lower end of the protector is pushed backward by the main nerve, requiring the operator to hold it, otherwise the traction protection of the nerve cannot be achieved.

[0003] Therefore, in view of the current situation of the above-mentioned prior art, it is an urgent problem to develop a nerve traction protection device. Summary of the Invention

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a nerve traction protection device, which can provide a large and stable acting force for the locking and fastening of the traction rod, is suitable for protecting nerves during lumbar disc surgery, reduces the working intensity of surgeons, saves manpower, and improves the safety of the operation at the same time.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a nerve traction protection device, including a traction rod and a handle. The handle includes a fixed handle and a locking handle that are hinged to each other. One end of the fixed handle is provided with the traction rod that can move up and down. The locking handle can lock the traction rod. A fastening bolt is threadedly connected to the fixed handle. The fastening bolt is perpendicular to the traction rod. The fastening bolt is located below the locking handle. The fastening bolt can abut against the upper pipe orifice of the working cannula that is matched with the nerve traction protection device. The fastening bolt can prevent the traction rod from being pushed backward by the nerve, resulting in nerve movement during the operation and causing nerve damage. At the same time, the locking handle and the fastening bolt independently provide a force source for the locking of the traction rod and the fastening of the handle, and do not affect the fixation of the handle and the working cannula when the height of the traction rod needs to be adjusted.

[0006] Furthermore, the fixed handle has a Y-shaped structure. The fixed handle includes a fastening part, a locking part, and a driving part. The fastening bolt is arranged in the fastening part. The locking part is provided with a placement hole which has a clearance fit with the traction rod. The locking part is also provided with a locking hole. The axis of the locking hole is perpendicular to the axis of the placement hole, and the locking hole communicates with the placement hole. The locking handle includes a hinged end and a driving end. The locking handle is hinged to the fastening part at the hinged end. The hinged end is also provided with a locking pin which is arranged in the locking hole. There is a clearance between the locking pin and the locking hole. The driving end is connected to the driving part through an elastic component. When the traction rod is in the locked state, the locking pin abuts against the traction rod under the action of the spring component. Through the cooperation of the locking handle and the fixed handle, on the one hand, it is convenient to lock and unlock the traction rod, and on the other hand, it does not affect the fastening of the handle and the sleeve, facilitating the adjustment of the height of the traction rod.

[0007] Furthermore, the elastic component includes a guide rod and a spring. The spring is sleeved on the guide rod, and the two ends of the spring respectively abut against the driving part and the driving end.

[0008] Furthermore, the traction rod has a hollow structure, and a negative pressure connector is arranged at the upper end of the traction rod. This increases the functions of the traction rod. Doctors can connect a negative pressure aspirator during the operation to independently complete the work of sucking tissue fluid, making the operation more convenient.

[0009] Furthermore, the cross-section of the traction rod is oval. This can reduce the occupation of space in the diameter direction of the working sleeve and accommodate larger surgical instruments.

[0010] Furthermore, a stripping hook is arranged at the lower end of the traction rod, and the stripping hook can be attached to the nerve. This can increase the contact area with the nerve, prevent the nerve from detaching from the traction rod, and better achieve the traction protection of the nerve.

[0011] From the above technical solutions, it can be seen that the present invention has the following advantages:

[0012] This solution provides a nerve traction protection device. By using fastening bolts for fastening, a moment greater than that of a spring in both magnitude and stability can be provided for the traction rod, eliminating the need for an assistant to hold the nerve retractor, preventing the traction rod from being pushed backward by the nerve and losing its function of protecting the nerve. At the same time, the locking handle and the fastening bolt independently provide the force sources for locking the traction rod and fastening the handle, without affecting each other. Through the cooperation of the locking handle and the fixed handle, it is convenient to lock and unlock the traction rod, and at the same time, it does not affect the fastening of the handle and the sleeve, facilitating the adjustment of the height of the traction rod. A negative pressure connector is provided at the upper end of the traction rod, enabling the doctor to independently aspirate tissue fluid during the operation, making the operation more convenient. The cross-section of the traction rod is set to be oval, which can reduce the space occupied in the diameter direction of the working sleeve and accommodate larger surgical instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a perspective view of the specific embodiment of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the traction rod in the locked state of the specific embodiment of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the traction rod in the unlocked state of the specific embodiment of the present invention.

[0017] In the figure, 1 is a fixed handle, 101 is a driving part, 102 is a fastening part, 103 is a locking part, 2 is a locking handle, 201 is a driving end, 202 is a hinged end, 3 is a locking pin, 4 is a negative pressure connector, 5 is a traction rod, 6 is a spring, 7 is a fastening bolt, 8 is a peeling hook, 9 is a working sleeve, 10 is a nerve, and 11 is a guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this patent.

[0019] As Figures 1 to 3As shown in the figure, this specific embodiment provides a nerve traction protection device, which includes a traction rod 5 and a handle. The handle includes a fixed handle 1 and a locking handle 2 that are hinged. One end of the fixed handle 1 is provided with a traction rod 5 that can move up and down. The locking handle 2 can lock the traction rod 5. A fastening bolt 7 is threadedly connected to the fixed handle 1. The fastening bolt 7 is perpendicular to the traction rod 5 and is located below the locking handle 2. The fastening bolt 7 can abut against the working sleeve 9 that matches the traction rod 5, and a relatively large and stable torque can be provided for the traction rod 5 through the fastening bolt 7 to prevent the lower end of the traction rod 5 from being pushed backward by the nerve and losing its protective effect. The traction rod 5 has a hollow structure. A negative pressure joint 4 is provided at the upper end of the traction rod 5. The negative pressure joint 4 is connected to the tissue fluid suction device, and the tissue fluid generated during the operation can be sucked through the traction rod 5. The doctor performing the operation can operate alone without the need for another assistant to operate a dedicated device for suction, saving manpower and material resources and being convenient to operate. The cross-section of the traction rod 5 is oval, which can reduce the occupation of space in the working sleeve 9 and facilitate the placement of larger working instruments. A stripping hook 8 is provided at the lower end of the traction rod 5, and the stripping hook 8 can fit with the nerve 10.

[0020] As Figure 2 and Figure 3 shown in the figure, in order to facilitate unlocking and locking the traction rod 5, and at the same time enable the locking of the traction rod 5 and the handle and the fastening of the handle and the working sleeve 9 to be carried out independently, and facilitate the doctor to adjust the height of the traction rod 5 according to needs after fastening the handle, the fixed handle 1 and the locking handle 2 can adopt the following specific structure: The fixed handle 1 has a Y-shaped structure. The fixed handle 1 includes a fastening part 102, a locking part 103, and a driving part 101. The fastening bolt 7 is provided on the fastening part 102. The locking part 103 is provided with a placement hole, and the placement hole has a clearance fit with the traction rod 5. The locking part 103 is provided with a locking hole, and the axis of the locking hole is perpendicular to the axis of the placement hole, and the locking hole intersects with the placement hole. The locking handle 2 includes a hinged end 202 and a driving end 201. The locking handle 2 is hinged to the fastening part 102 at the hinged end 202. A locking pin 3 is also provided at the hinged end 202. The locking pin 3 is arranged in the locking hole. The diameter of the locking pin 3 is smaller than the diameter of the locking hole, and there is a clearance between the locking pin 3 and the locking hole. The locking pin 3 can move obliquely back and forth in the locking hole under the drive of the locking handle 2. The driving end 201 is connected to the driving part 101 through an elastic component. The elastic component includes a guide rod 11 and a spring 6. The upper end of the guide rod 11 is provided with a limit cap, and the other end of the guide rod 11 is on the driving end 201 and extends out of the driving end 201. The spring 6 is sleeved on the guide rod 11, and the two ends of the spring 6 respectively abut against the driving part 101 and the driving end 201. When the traction rod 5 is in the locked state, the locking pin 3 is located at the front part of the locking hole, and the locking pin 3 abuts against the traction rod 5 under the action of the spring. When the traction rod 5 is in the unlocked state, the locking pin 3 is away from the traction rod 5 and does not contact the traction rod 5, and the traction rod 5 is in a relaxed state and can move up and down.

[0021] As can be seen from the above specific embodiments, the present invention has the following beneficial effects:

[0022] 1. By tightening the fastening bolt 7, the fastening can provide a moment greater than that of the spring 6 in both magnitude and stability for the traction rod 5, preventing the traction rod 5 from being pushed backward by the nerve 10 and losing its protective effect;

[0023] 2. The locking handle 2 and the fastening bolt 7 independently provide a force source for locking the traction rod 5 and fastening the handle, facilitating the doctor to adjust the height of the traction rod 5 during the operation without affecting the fixation of the handle;

[0024] 3. Through the cooperation of the locking handle 2 and the fixed handle 1, it is convenient to lock and unlock the traction rod 5, and at the same time, it does not affect the fastening of the handle and the sleeve, facilitating the adjustment of the height of the traction rod 5;

[0025] 4. The cross-section of the traction rod 5 is set to be elliptical, which can reduce the occupation of space in the diameter direction of the working sleeve 9 and accommodate larger surgical instruments;

[0026] 5. A negative pressure joint 4 is provided at the upper end of the traction rod 5, which enables the doctor to independently aspirate tissue fluid during the operation, making the operation more convenient.

[0027] The terms "upper", "lower", "outer side", "inner side", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish the relative relationships in position and do not have to be qualitative. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nerve traction protection device, comprising a traction rod (5) and a handle, Characterized in that, The handle includes a fixed handle (1) and a locking handle (2) that are hinged to each other. One end of the fixed handle (1) is provided with the traction rod (5) that can move up and down. The locking handle (2) can lock the traction rod (5). A fastening bolt (7) is threadedly connected to the fixed handle (1). The fastening bolt (7) is arranged perpendicular to the traction rod (5). The fastening bolt (7) is located below the locking handle (2). The fastening bolt (7) can abut against the upper pipe orifice of the working sleeve that is matched with the nerve traction protection device; The fixed handle (1) includes a locking part (103) and a driving part (101). The locking part (103) is provided with a placement hole. The placement hole is in clearance fit with the traction rod (5). The locking part (103) is further provided with a locking hole. The axis of the locking hole is perpendicular to the axis of the placement hole. The locking hole communicates with the placement hole. The locking handle (2) includes a hinged end (202) and a driving end (201). The hinged end (202) is provided with a locking pin (3). The locking pin (3) is arranged in the locking hole. A gap is provided between the locking pin (3) and the locking hole. The driving end (201) is connected to the driving part (101) through an elastic component. When the traction rod (5) is in the locked state, the locking pin (3) abuts against the traction rod (5) under the action of the elastic component. The elastic component includes a guide rod (11) and a spring (6). The upper end of the guide rod (11) is provided with a limit cap. The other end of the guide rod (11) is on the driving end (201) and extends out of the driving end (201). The spring (6) is sleeved on the guide rod (11). The two ends of the spring (6) respectively abut against the driving part (101) and the driving end (201).

2. The nerve traction protection device according to claim 1, Characterized in that, The fixed handle (1) has a Y-shaped structure. The fixed handle (1) further includes a fastening part (102). The fastening bolt (7) is arranged on the fastening part (102). The locking handle (2) is hinged to the fastening part (102) at the hinged end (202).

3. The nerve traction protection device according to claim 2, Characterized in that, The traction rod (5) has a hollow structure. A negative pressure joint (4) is provided at the upper end of the traction rod (5).

4. The nerve traction protection device according to claim 3, Characterized in that, The cross-section of the traction rod (5) is oval.

5. The nerve traction protection device according to claim 4, Characterized in that, A stripping hook (8) is provided at the lower end of the traction rod (5). The stripping hook (8) can fit with the nerve.

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