Net-bag-shaped tool bit for protecting omentum in pars plana vitrectomy

A vitreous body and net bag technology, applied in the field of medical devices, can solve problems such as aspiration of the retina, retinal breaks, and increase the difficulty of surgery, so as to reduce operating requirements, improve safety, and reduce retinal breaks.

Active Publication Date: 2021-07-23
JIANGSU PROVINCE HOSPITAL THE FIRST AFFILIATED HOSPITAL WITH NANJING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vitreous close to the retina is tightly adhered to the retina, especially in the case of retinal detachment, the retina may be aspirated by the high negative pressure of the vitrectomy head during the suction of the vitreous, resulting in iatrogenic retinal breaks and increasing the difficulty of surgery
At present, there is no effective device in surgery to effectively prevent such events from happening

Method used

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  • Net-bag-shaped tool bit for protecting omentum in pars plana vitrectomy
  • Net-bag-shaped tool bit for protecting omentum in pars plana vitrectomy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 The net bag-shaped cutter head shown includes: a tube body 1 with a cutting liquid-absorbing part at the front end, a telescopic net bag, a push rod 2 and an operating ring 3 . After the rear end of the tube body is connected to the vitreous body cutter, the tube body is driven by an external power source to rotate, swing or vibrate around its center, so that the cutting and absorbing part 4 completes the cutting and suction of the eye tissue vitreous body .

[0024] The telescopic net bag comprises several mesh wires 5 and connecting rings 6, and one end of all mesh wires is fixed with the top of the push bar, and the other end is evenly fixed on the connecting rings. The connecting ring is fixed on the front end of the pipe body and is located at the lower part of the cutting liquid suction part, so that the telescopic net bag wraps around the outside of the cutting liquid suction part and forms a net bag-shaped sphere.

[0025] The push rod is embedde...

Embodiment 2

[0029] The net bag-shaped cutter head includes: a pipe body provided with a cutting liquid-absorbing part at the front end, a telescopic net bag, a push rod and an operating ring. After the rear end of the tube is connected to the vitreous cutter, the tube rotates, swings or vibrates around its center driven by an external power source, so that the cutting and absorbing part completes cutting and absorbing the vitreous body of the eye tissue.

[0030] The telescopic net bag comprises several mesh wires and connecting rings, one end of all mesh wires is fixed to the top of the push rod, and the other end is uniformly fixed on the connecting ring. The connecting ring is fixed on the front end of the pipe body and is located at the lower part of the cutting liquid suction part, so that the telescopic net bag wraps around the outside of the cutting liquid suction part and forms a net bag-shaped sphere.

[0031] The push rod is embedded in the outer wall of the pipe body, and is fi...

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Abstract

The invention discloses a net-bag-shaped tool bit for protecting an omentum in pars plana vitrectomy. The net-bag-shaped tool bit comprises a tube body, a telescopic net bag, a push rod and an operation ring, wherein a cutting liquid suction part is arranged at the front end of the tube body. According to the net-bag-shaped tool bit, in the vitreous body cutting process, the telescopic net bag is contracted into a net bag-shaped ball which can be tightly attached to the retina, the vitreous body enters the net bag through the net bag hole diameter and then is cut off by the cutting liquid suction part, but the retina cannot enter the net bag through the net bag hole diameter due to protection of the net bag, and traction of the retina can be effectively prevented. The occurrence of iatrogenic retinal fissures is reduced, the safety of the operation is improved, the difficulty of the operation can be reduced, and the use of a beginner is facilitated.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a mesh-shaped vitrectomy cutter head for protecting the omentum in vitrectomy operations. Background technique [0002] Vitrectomy (pars plana vitrectomy, PPV) is the main method for the treatment of vitreoretinal diseases. Common clinical diseases such as retinal detachment and diabetic retinopathy require removal of the vitreous as much as possible. The vitreous close to the retina is tightly adhered to the retina, especially in the case of retinal detachment, the retina may be aspirated by high negative pressure of the vitrectomy head during the suction of the vitreous, resulting in iatrogenic retinal breaks and increasing the difficulty of surgery. At present, there is no effective device in the operation that can effectively prevent such events from happening. [0003] Therefore a vitrectomy cutter head that is easy to operate and can prevent the retina from bein...

Claims

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Application Information

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IPC IPC(8): A61F9/007
CPCA61F9/00736A61F9/007
Inventor胡仔仲秦兵张正雨谢平袁松涛计江东张薇玮刘庆淮
OwnerJIANGSU PROVINCE HOSPITAL THE FIRST AFFILIATED HOSPITAL WITH NANJING MEDICAL UNIV