CN203042531U

CN203042531U - Mini-size bulldog clamp with anastomotie stoma

Info

Publication number: CN203042531U
Application number: CN 201220615293
Authority: CN
Inventors: 黄伟青; 武钊
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-20
Filing date: 2012-11-20
Publication date: 2013-07-10
Anticipated expiration: 2022-11-20

Abstract

The utility model belongs to the field of medical instruments, particularly relates to a mini-size bulldog clamp, and provides a mini-size bulldog clamp with an anastomotie stoma, which aims at overcoming the defects of incomplete clamping, loosening and slipping of an existing mini-size bulldog clamp. The mini-size bulldog clamp with the anastomotie stoma comprises a clamp body and a clamp opening, wherein the clamp body and the clamp opening are formed by the same metal wire, the clamp body is formed by a circular ring and two arms stretching out from the circular ring after the two arms are crossed, the clamp opening is formed by clamping the two arms which continuously stretch after being crossed, particularly, one arm of the clamp opening is provided with a groove, and the other arm of the clamp opening is provided with a bulge which is matched with the groove. A blood vessel just needs to be put in the groove when the blood vessel is clamped, and the effect of stopping the blood flowing can be reached through the match of the groove and the bulge.

Description

A kind of miniature bulldog clamp with anastomotic stoma

Technical field

This utility model belongs to medical instruments field, is specifically related to a kind of miniature bulldog clamp.

Background technology

Cardiovascular and cerebrovascular disease is because its high incidence, height is disabled and fatality rate, has brought great economy and burden on society to China now.More and more popular, extensive at the basic research of cardiovascular and cerebrovascular vessel at present, in the major part experiment, all adopt the SD rat to set up the global brain ischemia re-perfusion model, method wherein comprises: two blood vessel blockings add low-pressure process, Pulsinelli four blood vessel methods, carotid artery negative pressure method etc., what external report and utilization were comparatively many is that two blood vessel blockings add low-pressure process, because it is little, the lightest to original hemorheology influence that this method is relatively damaged than additive method, so more meet practical situation clinically.Close and relate in the method bilateral common carotid arteries (CCA) pressed from both sides because bilateral common carotid arteries is positioned at the darker position of cervical region, separate the back when folder closes to the having relatively high expectations of bulldog clamp, its folder is closed performance small higher requirement is also arranged except constructing.The structure of existing miniature bulldog clamp comprises two arms that stretch out from annulus shown in Fig. 3 A, 3B, form the folder mouth that is parallel to each other after the arm crossing, by the folder mouth bulldog clamp is closed.

But in experimentation, find, because the folder mouth of above-mentioned miniature bulldog clamp is flat mouthful of design, when common carotid artery folder closes, can occur pressing from both sides and close infull phenomenon, and because the many and comparatively smooth cause of blood vessel of the dark surrounding tissue in CCA position, phenomenons such as bulldog clamp is loosening, slippage often appear, the blocking effect that this has had a strong impact on blood flow makes the cerebral tissue ischemia imperfect.

The utility model content

The purpose of this utility model is to overcome the defective that above-mentioned existing miniature bulldog clamp folder closes incomplete, loosening and slippage, and a kind of miniature bulldog clamp with anastomotic stoma is provided.

A kind of miniature bulldog clamp with anastomotic stoma, comprise the folder body and the Jia Kou that are formed by same tinsel, form after the arm crossing that the folder body stretches out by annulus and from annulus, the folder mouth is formed by the follow-up two arms clamping of stretching that renews of intersection, especially, one arm of folder mouth is provided with groove, and another arm of folder mouth is provided with the projection that matches with groove.Annulus is same tinsel coiled with pressing from both sides body two arms, and therefore two arms have elasticity, presses annulus two arms the folder mouth is opened, and unclamps annulus two arms the folder mouth is closed.Only need when folder closes blood vessel blood vessel is placed in the groove, can reach the effect of blocking blood flow by groove and coincideing of projection.

Folder body, Jia Kou, groove and projection are preferably placed at same plane.

Preferably, described groove is circular-arc.Circular-arc recess edge is comparatively mellow and full, can reduce the mechanical damage to blood vessel in the process that folder closes as much as possible.

The arc length of circular arc and radian can be selected according to the blood vessel that required folder closes.More preferably, the arc length of described circular arc is 1/3 ~ 2/3 of the length of an arm of circular arc place folder mouthful, more preferably 1/2.The length of one arm of circular arc place folder mouthful namely from the cross point to the length of a folder mouthful arm end.The radian of described circular arc is 60 degree ~ 120 degree, more preferably 90 degree.

The projection corresponding with groove can be to be curved by the single-layer metal silk, also can be curved to gain in strength by the double-level-metal silk.More preferably, described projection is solid projection.

In order further to increase the area that acts on the blood vessel, the width of folder mouth is preferably greater than the width of folder body, more preferably presss from both sides 1.5 ~ 3 times of body width.Width herein refers to the width of side, namely perpendicular to the width on plane, miniature bulldog clamp place.

Above-mentioned tinsel is preferably the titanium silk.

Compared with prior art, the utlity model has following advantage: existing bulldog clamp is identical with the width of folder body for putting down mouthful design and Jia Kou, the area that acts on the blood vessel is less, miniature bulldog clamp of the present utility model is because the width increase of folder mouth, the area that folder acts on when closing on the blood vessel increases, add groove and projection simultaneously, further improve the effect of blocking blood flow, avoid the loosening and slippage of bulldog clamp.

Description of drawings

Fig. 1 is the front elevation of the miniature bulldog clamp of this utility model embodiment.

Fig. 2 A is the front elevation of the miniature bulldog clamp of embodiment when opening.

Front when Fig. 2 B closes for the miniature bulldog clamp of embodiment.

Fig. 3 A is the front elevation of existing miniature bulldog clamp when opening.

Fig. 3 B is the front elevation of existing miniature bulldog clamp when closing.

The specific embodiment

Embodiment

As shown in Figure 1, the miniature bulldog clamp of the band anastomotic stoma of present embodiment, comprise the folder body and the Jia Kou that are formed by same titanium silk, form after the arm crossing that the folder body stretches out by annulus and from annulus, the folder mouth is formed by the follow-up two arms clamping of stretching that renews of intersection, one arm of folder mouth is provided with arc-shaped groove, and another arm of folder mouth is provided with the projection that matches with groove.

The arc length of circular arc is 1/2 of the length of an arm of circular arc place folder mouthful, and the radian of circular arc is 90 degree.The projection that matches with groove is solid projection.

A left side, cross point then is the folder mouth among the figure, and the right side, cross point is the folder body.Folder mouthful width is about 2 times of folder body width.

In experimentation, the folder body that only need pinch bulldog clamp opens the folder mouth, forms the opening shown in Fig. 2 A, the blood vessel that required folder is closed places in the groove of folder mouth, unclamps the folder body again, makes the closed condition of bulldog clamp recovery shown in Fig. 2 B, can press from both sides and close blood vessel, blocking blood flow.When needs make revascularization, pinch the folder body folder mouth is opened, take out bulldog clamp and can make restoration of blood flow.

Claims

1. miniature bulldog clamp with anastomotic stoma, comprise the folder body and the Jia Kou that are formed by same tinsel, form after the arm crossing that the folder body stretches out by annulus and from annulus, the folder mouth is formed by the follow-up two arms clamping of stretching that renews of intersection, it is characterized in that: an arm of folder mouth is provided with groove, and another arm of folder mouth is provided with the projection that matches with groove.

2. miniature bulldog clamp as claimed in claim 1, it is characterized in that: described groove is circular-arc.

3. miniature bulldog clamp as claimed in claim 2 is characterized in that: the arc length of described circular arc is 1/3 ~ 2/3 of the length of an arm of circular arc place folder mouthful.

4. miniature bulldog clamp as claimed in claim 3 is characterized in that: the radian of described circular arc is 60 degree ~ 120 degree.

5. miniature bulldog clamp as claimed in claim 4, it is characterized in that: described projection is solid projection.

6. as each described miniature bulldog clamp in the claim 1 ~ 5, it is characterized in that: the width of folder mouth is greater than the width of folder body.

7. miniature bulldog clamp as claimed in claim 6 is characterized in that: press from both sides mouthful width and be 1.5 ~ 3 times of folder body width.

8. miniature bulldog clamp as claimed in claim 7, it is characterized in that: described tinsel is the titanium silk.