阅读说明：本技术 一种黄韧带咬除钳 (Yellow ligament bites and removes pincers ) 是由 卢政好 欧军 罗灿 于 2020-04-30 设计创作，主要内容包括：本发明涉及医用钳,具体来说是一种黄韧带咬除钳,包括钳杆和与该钳杆连接的咬合部,所述钳杆内设置有沿该钳杆长度方向移动的推拉杆,前推该推拉杆,所述咬合部闭合可咬除黄韧带；后拉该推拉杆,所述咬合部张开。本发明通过推拉杆的前推或后拉实现了咬合部的咬合或张开,其与现有的蓝钳等装置相比,使用更方便、操作更简单。且本发明通过在钳杆内设置吸引通道或设置内钳的方式,可将咬合空间内的黄韧带先咬住,以防其滑落；再通过咬合部可迅速咬除黄韧带,从而大大节约了手术时间。(The invention relates to medical forceps, in particular to ligamentum flavum biting forceps, which comprise a forceps rod and an occlusion part connected with the forceps rod, wherein a push-pull rod moving along the length direction of the forceps rod is arranged in the forceps rod, the push-pull rod is pushed forwards, and the occlusion part is closed and can bite the ligamentum flavum; and pulling the push-pull rod backwards, and opening the occlusion part. The invention realizes the occlusion or the opening of the occlusion part by the forward pushing or the backward pulling of the push-pull rod, and compared with the prior blue forceps and other devices, the invention has the advantages of more convenient use and simpler operation. In addition, the ligamentum flavum in the occlusion space can be firstly occluded in a way of arranging the suction channel or the inner forceps in the forceps rod so as to prevent the ligamentum flavum from sliding off; the ligamentum flavum can be quickly bitten off through the occlusion part, thereby greatly saving the operation time.)

1. The utility model provides a yellow ligament bites except that pincers, includes the tong pole and with the interlock portion that this tong pole is connected, its characterized in that: a push-pull rod moving along the length direction of the clamp rod is arranged in the clamp rod, the push-pull rod is pushed forwards, and the occlusion part is closed to occlude the ligamentum flavum; and pulling the push-pull rod backwards, and opening the occlusion part.

2. The ligamentum flavum biting forceps of claim 1, wherein: the occlusion part comprises a movable arm, a fixed arm and an occlusion space which is formed by the movable arm and the fixed arm and can contain ligamentum flavum, the fixed arm is fixedly connected with the clamp rod, the movable arm is driven by the push-pull rod to move, the rear ends of the movable arm and the fixed arm are hinged together, and the push-pull rod is pushed forwards or pulled backwards to drive the rear end of the movable arm to rotate so as to close or open the front ends of the movable arm and the fixed arm.

3. The ligamentum flavum biting forceps of claim 2, wherein: and a pin shaft is arranged at the rear end of the fixed arm along the width direction of the fixed arm, the rear end of the movable arm is fixedly connected with the pin shaft, and the pin shaft is driven to rotate by pushing or pulling the push-pull rod forwards.

4. The ligamentum flavum biting forceps of claim 3, wherein: the pin shaft is fixedly provided with a gear, and the front end of the push-pull rod is fixedly connected with a rack matched with the gear.

5. The ligamentum flavum biting forceps of claim 4, wherein: and a suction channel is formed in the forceps rod along the length direction of the forceps rod, the front end of the suction channel is communicated with the occlusion space, and the rear end of the suction channel is connected with a negative pressure device.

6. The ligamentum flavum biting forceps of claim 4, wherein: an inner clamp capable of biting the ligamentum flavum is arranged in the occlusion space.

7. The ligamentum flavum biting forceps of claim 6, wherein: the inner pliers comprise a transmission mechanism and pliers heads arranged in the occlusion space, and the push-pull rod drives the pliers heads to occlude the ligamentum flavum through the transmission mechanism.

8. The ligamentum flavum biting forceps of claim 7, wherein: the front end of the tong head is hook-shaped and forms a tong mouth with the front end of the movable arm, and the rear end of the tong head is driven to rotate through the transmission mechanism to bite the ligamentum flavum positioned in the tong mouth between the front end of the tong head and the front end of the movable arm.

9. The ligamentum flavum biting forceps of claim 8, wherein: the transmission mechanism comprises an inner pin shaft arranged at the rear end of the fixed arm in the width direction of the fixed arm and an inner gear fixedly arranged on the inner pin shaft, the inner gear is meshed with the gear, and the rear end of the tong head is fixedly arranged on the inner pin shaft.

10. The ligamentum flavum biting forceps of claim 1, wherein: the rear end of the push-pull rod is provided with a handle.

Technical Field

The invention relates to medical forceps, in particular to yellow ligament biting forceps.

Background

Spinal endoscopic disc nucleus surgery is a hot technique in spinal surgery in recent years. The key step of breaking through the ligamentum flavum to enter the vertebral canal is also a difficult point, and the time is usually long. The ligamentum flavum is a layer of dense yellow connective tissue, the proximal end is located at the deep surface of the lower part of the superior vertebral plate, the distal end is located at the shallow surface of the upper part of the inferior vertebral plate, and the medial side is integrated with the interspinous ligament. In spinal surgery, in the process of laminectomy decompression or fenestration decompression, the ligamentum flavum between vertebral plates needs to be removed, and the ligamentum flavum is usually torn off by using devices such as vertebral plate rongeur, blue forceps and the like. At present, the problems exist that the devices are easy to slip when clamping the ligamentum flavum, are difficult to clamp the ligamentum flavum, cause a great deal of time consumption and prolong the operation time.

Disclosure of Invention

Aiming at the technical problems, the invention provides the ligamentum flavum biting forceps which is simple to operate and convenient to use.

The technical scheme adopted by the invention for solving the technical problems is as follows: a ligamentum flavum biting and removing clamp comprises a clamp rod and an occlusion part connected with the clamp rod, wherein a push-pull rod moving along the length direction of the clamp rod is arranged in the clamp rod, the push-pull rod is pushed forwards, and the occlusion part is closed and can bite the ligamentum flavum; and pulling the push-pull rod backwards, and opening the occlusion part.

Preferably, the occlusion part comprises a movable arm, a fixed arm and an occlusion space formed by the movable arm and the fixed arm and capable of accommodating ligamentum flavum, the fixed arm is fixedly connected with the forceps rod, the movable arm is driven by the push-pull rod to move, the rear ends of the movable arm and the fixed arm are hinged together, and the push-pull rod is pushed forwards or pulled backwards to drive the rear end of the movable arm to rotate so as to close or open the front ends of the movable arm and the fixed arm.

Preferably, the rear end of the fixed arm is provided with a pin shaft along the width direction, the rear end of the movable arm is fixedly connected with the pin shaft, and the pin shaft is driven to rotate by pushing or pulling the push-pull rod forwards.

Preferably, a gear is fixedly mounted on the pin shaft, and a rack matched with the gear is fixedly connected to the front end of the push-pull rod.

Preferably, a suction passage is formed in the forceps rod along a longitudinal direction thereof, a front end of the suction passage communicates with the occlusion space, and a rear end of the suction passage is connected to a negative pressure device.

Preferably, an inner clamp capable of clamping the ligamentum flavum is arranged in the occlusion space.

Preferably, the inner forceps comprise a transmission mechanism and a forceps head arranged in the occlusion space, and the push-pull rod drives the forceps head to occlude the ligamentum flavum through the transmission mechanism.

Preferably, the front end of the forceps head is hook-shaped, a jaw is formed between the front end of the forceps head and the front end of the movable arm, and the rear end of the forceps head is driven to rotate through the transmission mechanism to bite the ligamentum flavum positioned in the jaw between the front end of the forceps head and the front end of the movable arm.

Preferably, the transmission mechanism comprises an inner pin shaft arranged at the rear end of the fixed arm along the width direction of the fixed arm and an inner gear fixedly arranged on the inner pin shaft, the inner gear is meshed with the gear, and the rear end of the tong head is fixedly arranged on the inner pin shaft.

Preferably, a handle is arranged at the rear end of the push-pull rod.

According to the technical scheme, the occlusion or opening of the occlusion part is realized by forward pushing or backward pulling of the push-pull rod, and compared with the existing blue forceps and other devices, the blue forceps and the like are more convenient to use and simpler to operate. In addition, the ligamentum flavum in the occlusion space can be firstly occluded in a way of arranging the suction channel or the inner forceps in the forceps rod so as to prevent the ligamentum flavum from sliding off; the ligamentum flavum can be quickly bitten off through the occlusion part, thereby greatly saving the operation time.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another preferred mode of the invention.

Detailed Description

The present invention will be described in detail with reference to fig. 1-2, wherein the exemplary embodiments and descriptions of the present invention are provided to explain the present invention but not to limit the present invention.

The invention provides a pair of ligamentum flavum biting and removing forceps, which comprises a forceps rod 1 and an occlusion part 2 connected with the forceps rod, wherein a push-pull rod 3 moving along the length direction of the forceps rod is arranged in the forceps rod, the push-pull rod is pushed forwards, and the occlusion part is closed and can bite the ligamentum flavum; and pulling the push-pull rod backwards, and opening the occlusion part. During operation, the occlusion part is firstly opened, when the ligamentum flavum is positioned in the occlusion opening, the push-pull rod is pushed forward, and the occlusion part is closed, so that the ligamentum flavum is occluded. The invention realizes the closing and opening of the occlusion part by a forward pushing or backward pulling mode, and compared with the prior blue forceps and other devices, the invention has more convenient use and simpler operation. And the handle 4 is arranged at the rear end of the push-pull rod, and the occlusion part can be closed and opened by pushing the push-pull rod forwards or pulling the push-pull rod backwards through the handle, so that the operation is further facilitated.

Specifically, the occlusion part 2 includes a movable arm 21, a fixed arm 22 and an occlusion space 23 formed by the movable arm and the fixed arm and capable of accommodating ligamentum flavum, the fixed arm is fixedly connected with the forceps rod, the movable arm is driven by the push-pull rod to move, rear ends of the movable arm and the fixed arm are hinged together, and the push-pull rod is pushed forwards or pulled backwards to drive the rear end of the movable arm to rotate so as to close or open front ends of the movable arm and the fixed arm. In the operation process, the front ends of the movable arm and the fixed arm are opened first, and when the ligamentum flavum is positioned in the occlusion space, the ligamentum flavum is occluded through the closing of the movable arm and the fixed arm.

Preferably, a pin shaft 24 is arranged at the rear end of the fixed arm along the width direction, the rear end of the movable arm is fixedly connected with the pin shaft, the push-pull rod is pushed forwards or pulled backwards to drive the pin shaft to rotate, the pin shaft rotates to drive the rear end of the movable arm to rotate, and the front end of the movable arm rotates around the pin shaft, so that the movable arm can approach the fixed arm and is closed with the front end of the fixed arm. In the implementation process, a gear 25 is fixedly installed on the pin shaft, and a rack 26 matched with the gear is fixedly connected to the front end of the push-pull rod. In the movement process, when the push-pull rod is pushed forwards, the rack moves forwards, and the rack drives the gear to rotate anticlockwise, so that the pin shaft is driven to rotate anticlockwise, and the movable arm is driven to approach the fixed arm until the movable arm and the fixed arm are closed; when the push-pull rod is pulled backwards, the rack moves backwards, and the rack drives the gear to rotate clockwise, so that the pin shaft is driven to rotate clockwise, and the movable arm is driven to be far away from the fixed arm to open the fixed arm and the movable arm.

As shown in fig. 1, a suction passage 5 is preferably formed in the forceps rod along the longitudinal direction thereof, the front end of the suction passage communicating with the occlusion space, and the rear end of the suction passage being connected to a negative pressure device. When the ligamentum flavum is located the interlock space, start negative pressure device, inhale away the liquid in the interlock space fast, cause local negative pressure, the ligamentum flavum will be unable because of the effect of suction force and retract like this, then bite through the closure of deciding arm and swing arm and remove to the ligamentum flavum slippage has been avoided. The negative pressure device can adopt a negative pressure machine, an aspirator and the like commonly used in hospitals in the implementation process.

As shown in fig. 2, it is preferable that an inner forceps 6 capable of biting the ligamentum flavum is arranged in the occlusion space, i.e. the ligamentum flavum in the occlusion space is positioned by the inner forceps to prevent the ligamentum flavum from retracting, and then the ligamentum flavum is bitten and removed by the fixed arm and the movable arm. Specifically, the inner forceps 6 includes a transmission mechanism and a forceps head 61 disposed in the occlusion space, and the push-pull rod drives the forceps head to bite the ligamentum flavum through the transmission mechanism. The invention simultaneously drives the movable arm and the inner clamp through the push-pull rod, and has the advantages of ingenious design and convenient operation.

Preferably, the front end of the binding clip is hook-shaped, the ligamentum flavum can be hooked from the lower side, a jaw is formed between the front end of the binding clip and the front end of the movable arm, and the rear end of the binding clip is driven to rotate through the transmission mechanism to clamp the ligamentum flavum in the jaw between the front end of the binding clip and the front end of the movable arm. In the implementation process, the movable arm moves from top to bottom, and the forceps head moves from bottom to top, so that the ligamentum flavum can be firmly hooked on the forceps jaws. Specifically, the transmission mechanism comprises an inner pin shaft 62 arranged at the rear end of the fixed arm along the width direction of the fixed arm and an inner gear 63 fixedly arranged on the inner pin shaft, the inner gear is meshed with the gear, the rear end of the tong head is fixedly arranged on the inner pin shaft, so that the inner gear is driven to rotate through the rotation of the gear, the inner pin shaft is driven to rotate, the tong head is driven to rotate, and the push-pull rod is used for driving the movable arm and the inner tong to move simultaneously; since the gear is meshed with the internal gear, the rotation directions of the gear and the internal gear are opposite, so that the movable arm can move from top to bottom, and the tong head can move from bottom to top.