CN201290721Y

CN201290721Y - Medical electric snare

Info

Publication number: CN201290721Y
Application number: CNU2008202171902U
Authority: CN
Inventors: 袁捷; 张予蜀; 徐晓军; 张振玉
Original assignee: Jiangsu Province Hospital First Affiliated Hospital With Nanjing Medical University
Current assignee: Jiangsu Province Hospital First Affiliated Hospital With Nanjing Medical University
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-08-19
Anticipated expiration: 2018-11-27

Abstract

The utility model relates to a medical electrosurgical snare, belonging to the technical field of medical device. Finger rings capable of sliding are sleeved on the pipe-shaped handle of the electrosurgical snare. The front end of the pipe-shaped handle is fixedly connected with the tail end of a flexible sleeve pipe. The finger rings are connected with the two ends of a live elastic metal wire which forms a ring, and the ring end of the elastic metal wire extends to the front end of the flexible sleeve pipe through the pipe-shaped handle. The utility model has the improvement that a flexible net which is knitted by insulating thin thread is arranged on the ring end of the elastic metal wire, so when the ring sleeve is tightened up and the focus tissue is excised by electrification, the prior opened flexible net gradually narrows down and forms a net bag as the ring sleeve becomes smaller and holds the excised focus tissue such as a polypus, and the excised focus tissue can be taken out from the internal part of a body along with the extraction of the electrosurgical snare, thus avoiding the problem of searching the excised tissue in vivo and greatly facilitating the operation.

Description

The electro-medical snare

Technical field

This utility model relates to a kind of electro-medical snare, and electric snare under especially a kind of scope with silk screen belongs to technical field of medical instruments.

Background technology

The electricity snare is the medical apparatus and instruments commonly used that carries out interior arthroscopic diagnosis such as pipe intestinal polyp excision.The basic structure of existing electric snare is: the finger ring circle of suit slip on the pipe handle, the front end of pipe handle is fixedlyed connected with the tail end of flexible sleeve, the finger ring circle is connected with the energising elastic metallic yarn two ends that form ring, and the ring end of elastic metallic yarn is extended to the front end of flexible sleeve by pipe handle.During the excision polyp, flexible sleeve is transported to the intravital lesions position of people through gastroscope (or intestinal mirror) pincers road, when the relative handle of finger ring circle was moved forward, the ring end of elastic metallic yarn will stretch out from the front end of flexible sleeve, and formed snare automatically under the elastic dilatation effect; After observation is enclosed within snare on the polyp by gastroscope (or intestinal mirror), gradually the finger ring circle is moved backward relative to handle, snare diminishes thereupon gradually, and until the in-vivo tumour of the polyp and so on that is locked, then energising heating makes polyp be solidified excision from normal structure.

Cut polyp must reclaim and carry out pathologic finding.The cut back of polyp tumbles in digestive tract in taking off with the digestive tract tube wall.Need extract the electric snare in gastroscope (or intestinal mirror) the pincers road this moment, insert other endoscopic accessory (as crocodile brank, basket etc.) through the pincers road again, seek and clamp the polyp that tumbles, together withdraw from external (size of polyp often greater than the diameter in pincers road, clamps the road so polyp can't enter) with gastroscope (or intestinal mirror) again.

Recovery after the polypectomy is a present clinical big problem that faces.Tumble after the part polypectomy and be difficult to find (particularly at intestinal), cause follow-up pathologic finding not carry out; Perhaps spending a large amount of time finds polyp, has prolonged operating time greatly; The polyp of perhaps clamping drops in moving back the mirror way, causes restarting seeking; If patient's polyp is multiple, then must repeatedly repeat said process.

The utility model content

The purpose of this utility model is: the problem that exists in using at above-mentioned existing electric snare proposes a kind of electro-medical snare that not only can excise the internal lesions tissue but also it can be caught, thereby avoids the trouble sought in vivo.

In order to reach above purpose, the finger ring circle of suit slip on the pipe handle of electro-medical snare of the present utility model, the front end of described pipe handle is fixedlyed connected with the tail end of flexible sleeve, described finger ring circle is connected with the energising elastic metallic yarn two ends that form ring, and the ring end of described elastic metallic yarn is extended to the front end of flexible sleeve by pipe handle.Its improvements are: the ring end of described elastic metallic yarn is shaped on the flexible net that the insulation filament is made into.

Like this, after tightening up snare and energising excision lesion tissue, original open flexible net will be with the diminishing and become the string bag gradually of snare, catches polyp and so on the lesion tissue of excision; After polyp was cut, cut polyp dropped in the string bag of electric snare formation, had avoided seeking in vivo, reclaiming the trouble of cut tissue fully; And can many pieces of polyps of once resecting, the polyp of many pieces of excisions is all preserved in the string bag, treat that all operations finishes after, the traction string bag together withdraws from external with gastroscope (or intestinal mirror).Thereby make things convenient for operation technique greatly, reduce operating time, alleviate the patient suffering.

Description of drawings

Below in conjunction with accompanying drawing this utility model is further described.

Fig. 1 is the structural representation of an embodiment of this utility model.

The specific embodiment

Embodiment one

Present embodiment is an electric snare under a kind of scope with silk screen, its structure as shown in Figure 1, the finger ring circle 2 of suit slip on the pipe handle 1.The front end of pipe handle 1 is fixedlyed connected with flexible sleeve 3 tail ends of stainless steel silk coiled.Finger ring circle 2 is connected with the two ends of the energising elastic stainless steel silk 4 that forms ring.The ring end 5 of elastic stainless steel silk 4 is extended to the front end of flexible sleeve 3 by pipe handle.The ring end 5 of elastic stainless steel silk 4 is shaped on the flexible net 6 that insulation filament interlacing forms.Flexible net 6 is fixed on ring end 5 peripheries by the extended screw thread 7 in edge.When the ring end opened, flexible net was opened thereupon, just as racket.When the ring end shrank, flexible net was gathered thereupon, formed string bag shape.

During operation, after tightening up snare excision polyp tissue, original open flexible net will catch the tissue of excision with the contraction of snare, making it can withdrawing from and takes out in body with electric snare, avoided the trouble of the cut tissue of searching in vivo, even once carry out the lesion tissue excision of many places, also a plurality of resection organizations can be contained in the string bag, greatly facilitate operation technique.

In a word, electric snare has the following advantages under the scope of present embodiment band silk screen:

1, cut polyp drops in the string bag of electric snare formation, has avoided seeking in vivo, reclaiming the trouble of cut tissue fully;

2, can many pieces of polyps of once resecting, the polyp of many pieces of excisions is all preserved in the string bag, treat that all operations finishes after, the traction string bag together withdraws from external with gastroscope (or intestinal mirror);

3, greatly facilitate operation technique, reduced operating time, alleviated the patient suffering.

In addition to the implementation, this utility model can also have other embodiments.For example, flexible net also can be by the extended screw thread kink in edge at the ring end periphery.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of this utility model requirement.

Claims

1. electro-medical snare, the finger ring circle of suit slip on the pipe handle, the front end of described pipe handle is fixedlyed connected with the tail end of flexible sleeve, described finger ring circle is connected with the energising elastic metallic yarn two ends that form ring, and the ring end of described elastic metallic yarn is extended to the front end of flexible sleeve by pipe handle.Its improvements are: the ring end of described elastic metallic yarn is shaped on the flexible net that the insulation filament is made into.

2. electro-medical snare according to claim 1 is characterized in that: described flexible net is fixed on the ring end periphery by the extended screw thread in edge.

3. electro-medical snare according to claim 1 is characterized in that: described flexible net is passed through the extended screw thread kink in edge at the ring end periphery.

4. according to claim 2 or 3 described electro-medical snares, it is characterized in that: described flexible net is formed by insulation filament interlacing.