Ligature clamp with double-arm structureTechnical Field
The invention relates to the field of medical instruments, in particular to a ligature clip with a double-clip-arm structure.
Background
In modern surgical operations, a vessel knot clip can be implemented by closing a vessel by a ligature clip or suturing a vessel with a surgical suture, and complicated operations on a needle and a suture are required to form a knot required to ligate a vessel when performing vessel ligation using a surgical suture. Such complex procedures are time consuming and require high skill on the part of the physician itself, especially in endoscopic procedures where space and visibility are limited. In contrast, the ligating clip is relatively easy and quick to apply, and thus the use of the ligating clip in surgical endoscopic surgery has increased dramatically.
The traditional ligature clamp mainly uses a clip applier as a closing tool, so that the two ends of the ligature clamp are mutually buckled to complete closing nails, thereby realizing ligature of tissue blood vessels. The traditional ligature clamp has the problems of insufficient clamping force and falling-off prevention performance, and after the ligature clamp is closed, the plastic ligature clamp slides or is not tightly closed on a blood vessel, and the situation that blood circulation cannot be completely blocked or the clamp is removed occurs, so that great potential safety hazards are brought to patients, and simultaneously, the pressure in the heart is brought to a surgeon. For this reason, a doctor usually reserves more than 2 ligature clips at the patient end to ensure the arrangement after ligation, which not only increases the usage amount of the ligature clips, but also increases the workload of the doctor. Therefore, how to improve the safety and reliability of the ligature clamp in the operation process and reduce the anti-slip and anti-drop hidden trouble of the ligature clamp is a technical problem which needs to be solved by the technicians in the field at present.
Disclosure of Invention
The invention aims to provide a ligature clamp with a double-clamp-arm structure, which can effectively avoid the problems of insufficient strength and easy slipping of products.
The invention is realized by the following technical scheme: the ligature clamp with the double-clamp-arm structure comprises an upper clamp arm and a lower clamp arm, wherein the main body is the ligature clamp; the rear ends of the upper clamping arm and the lower clamping arm are hinged, and the front ends are locked by a locking structure;
the side walls of the front parts of the upper clamping arm and the lower clamping arm are provided with clamp applying grabbing posts;
the middle part of the clamping surface of the upper clamping arm is provided with a first groove which is recessed upwards and extends along the front-back direction;
the middle part of the clamping surface of the lower clamping arm is provided with a second groove which is concave downwards and extends along the front-back direction.
Compared with the prior art, the invention has the beneficial effects that:
1. the groove structure is additionally arranged on the traditional U-shaped ligature clamp structure, two clamping surfaces are formed on two sides of the groove structure, the upper and lower double-clamping-arm structure is further derived, the upper and lower double-clamping-arm structure can be utilized to realize the clamping effect that one clamping is equivalent to clamping two ligature clamps, the problems of slipping and automatic flicking after installation and closing are avoided, and meanwhile, the operation of secondary clamping is saved.
2. Under the condition that the thickness and the size of the clamping arms are consistent, tissues can sink into the grooves, so that the upper and lower double-clamping-arm structure can increase the outer surface area; meanwhile, the elasticity and the toughness are increased, so that the anti-flick capability and the anti-slip capability are improved.
3. Through the groove structure, the abduction tissue block is formed after the tissue is clamped, so that the product is not easy to slip after being installed and closed, and a more effective closing clamping force is provided.
4. The upper and lower double-clamping arm structure can also reduce the requirement on the strength of the material.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention at another view angle;
FIG. 3 is a graph showing the effect of the present invention when occluding vascular tissue;
fig. 4 is a graph showing the effect of two ligating clips on closing vascular tissue in the prior art.
Description of the reference numerals: 1 ligature clip, 11 upper arm, 111 upper left arm, 112 upper right arm, 113 first groove, 114 barb, 12 lower arm, 121 lower left arm, 122 lower right arm, 123 second groove, 124 tapered end, 13 clip applying gripping column, 14 anti-slip tooth.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, but the protection of the present invention is not limited to the following:
as shown in fig. 1 to 4, a ligating clip having a double-arm structure, the main body of which is a ligating clip 1, includes an upper arm 11 and a lower arm 12; the rear ends of the upper clamping arm 11 and the lower clamping arm 12 are hinged, and the front ends are locked by a locking structure;
the side walls of the front parts of the upper clamping arm 11 and the lower clamping arm 12 are provided with clamp applying grabbing posts 13;
the middle part of the clamping surface of the upper clamping arm 11 is provided with a first groove 113 which is recessed upwards and extends along the front-back direction;
the middle part of the clamping surface of the lower clamping arm 12 is provided with a second groove 123 which is recessed downwards and extends along the front-rear direction.
The first groove 113 extends upwards to form a first slot on the upper surface of the upper clamping arm 11, and the first slot divides the upper clamping arm 11 into a left upper clamping arm 111 and a right upper clamping arm 112;
the second groove 123 extends downward to the lower surface of the lower arm 12 to form a second slot, and the second slot divides the lower arm 12 into a left lower arm 121 and a right lower arm 122.
According to the invention, the first groove and the second groove are additionally arranged on the traditional U-shaped ligature clamp structure, so that the upper and lower clamp arm structures form an upper and lower double clamp arm structure, the clamping effect of clamping two ligature clamps at one time is realized on the basis of the upper and lower double clamp arm structures, the problems of slipping and automatic flicking after installation and closing are avoided, and meanwhile, the secondary closing clamp is saved. Under the condition of the same thickness dimension, the clamping surfaces of the upper and lower double clamping arms and the inner side surfaces of the grooves form clamping areas, so that the surface clamping area is increased; in addition, the elasticity and the toughness are increased, so that the anti-flick capability and the anti-slip capability are improved.
As shown in fig. 3 and 4: a first slot formed by the first groove 113 divides the upper clip arm 11 into a left upper clip arm 111 and a right upper clip arm 112; the second groove 123 faces the second slot; the lower clamp arm 12 is divided into a left lower clamp arm 121 and a right lower clamp arm 122. After the product is closed, the left clamping arm and the right clamping arm have the same clamping effect as two ligating clamps; meanwhile, the gap between the left clamping arm and the right clamping arm is clamped after clamping to form an outward-stretching tissue block, so that the problem that a product slides axially and transversely after being installed and closed is effectively avoided.
The rear ends of the upper clamp arm 11 and the lower clamp arm 12 are hinged by a hinge. The hinging technique of the hinging structure is more conventional, so that redundant description is omitted.
The first recess 113 and the second recess 123 each extend to the hinge. The first groove 113 and the second groove 123 are guided to the hinge, mainly to facilitate the processing of the grooves or slots.
The locking structure is a barb 114 arranged at the front end of the upper clamping arm 11 and a lock 124 arranged at the front end of the lower clamping arm 12;
the barb 114 and the locking head 124 cooperatively lock after clamping. The locking structure is more conventional and will not be described in detail.
The clamping surfaces of the left upper clamping arm 111 and the left lower clamping arm 121 are provided with anti-skid teeth 14;
the clamping surfaces of the upper right clamping arm 112 and the lower right clamping arm 122 are provided with anti-slip teeth 14.
The structure of the anti-slip teeth is more conventional, so that redundant description is omitted. The purpose is to increase the friction force of the clamping surface and prevent slipping.
In summary, the application mode of the invention is as follows:
the clamp forceps are arranged on the clamp forceps by utilizing the clamp forceps grabbing column, and the clamp forceps enter vascular tissues to be clamped through the instrument channel to find the position where clamping is needed. And then force is applied to the clamp applier to clamp the invention until the barb and the lock head are heard to be locked and the clamp applier is released after locking sound is emitted, the clamp applier condition is observed, the clamp applier is taken out from the instrument channel after the condition is confirmed to be correct, and the clamp applier is finished.
The clamping effect of the present invention is shown in fig. 3. Because of the existence of the first groove and the second groove, tubular tissues or blood vessels can be extruded when the ligature clamp is closed, and a huge cavity is formed at the position of the opening groove, and the huge cavity can block the relative displacement of the ligature clamp, so that the anti-slip force of the ligature clamp is increased.
While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be appreciated that various changes and modifications can be made therein without departing from the spirit of the invention. It is, therefore, to be understood that the invention is not to be in any way limited except by the appended claims and their equivalents.