CN111513793A

CN111513793A - Absorbable ligature clamp and disassembling method thereof

Info

Publication number: CN111513793A
Application number: CN202010295748.4A
Authority: CN
Inventors: 舒明泉; 张幸波; 徐斌峰
Original assignee: Zhejiang Tiansong Medical Instrument Co ltd
Current assignee: Zhejiang Tiansong Medical Instrument Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-08-11

Abstract

The invention relates to an absorbable ligation clip and a disassembly method thereof, wherein the absorbable ligation clip comprises an upper clip arm and a lower clip arm, and is characterized in that: go up the arm lock and pass through the tripe with lower arm lock and connect, the head of going up the arm lock is the latch hook, and the latch hook top is equipped with the centre gripping axle, and latch hook inside is equipped with elongated latch hook cavity, and the head of lower arm lock is connecting portion, and the side of connecting portion is equipped with down the centre gripping body, and the middle part of going up the clamping surface is equipped with protruding axle, and the middle part of lower clamping surface is equipped with the recess, goes up the clamping surface and distributes on the clamping surface down and has. The invention adopts biodegradable materials as raw materials, can realize the automatic degradation and absorption in the body of the ligation clamp, has no foreign matter residue, realizes the fixation of the ligation clamp along the axial direction of a blood vessel by utilizing the matched convex shaft and the groove, realizes the transverse fixation of the blood vessel in the ligation clamp by utilizing the staggered convex parts, realizes the automatic adjustment of clamping force by the reserved gap of the cavity of the lock hook, and has the advantages of axial and transverse skid resistance, firm clamping, adjustable clamping force, easy disassembly and the like.

Description

Absorbable ligature clamp and disassembling method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to an absorbable ligature clamp and a disassembling method thereof.

Background

In human body surgical operations such as nidectomy in human body, it is necessary to close part of blood vessels or organs in human body temporarily or permanently during excision operation in order to make the operation smoothly, and the prior art generally adopts clips of metal materials (such as titanium clips and silver clips) or non-absorbable plastic clips to ligate tissues in cavity, and since these materials can not be degraded or absorbed, foreign body reaction or tissue stimulation can be caused to generate complications such as inflammation, pain and the like after long-term staying in the body.

In recent years, absorbable biologic clamps are gradually brought into the market along with the development of absorbable materials, but the existing absorbable clamps still have various problems of overlarge clamping force of large blood vessels (tissues), insufficient anti-slip force, easy deviation in the clamping process, difficult disassembly and the like.

CN 108294802 a discloses a double-layer U-shaped tubular tissue ligation clip, and particularly discloses that the hemostatic ligation clip comprises an inner clip and an outer clip, wherein both the inner clip and the outer clip are made of absorbable materials and are of a U-shaped opening structure. The blend material has better hydrophilicity and better tissue compatibility, and the prepared ligation clip has moderate hardness and does not damage human tissues; however, in the process of clamping a large blood vessel, the clamping force is too large, and the tissue is damaged. And the inner side of the inner clamp is not provided with an anti-skidding structure, the phenomenon of deviation or skidding from the clamping tissue is easy to occur in the clamping process, and the clamping effect is to be improved.

In addition, most of the ligation clips in the prior art have the problems of easy clip application and difficult clip taking.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide an absorbable ligature clamp which is anti-skid, adjustable in clamping force, high in clamping firmness and easy to disassemble and a corresponding disassembling method.

The technical scheme adopted by the invention for solving the problems is as follows: this can absorb ligature clamp, including last arm lock and lower arm lock, its characterized in that: go up arm lock and lower arm lock and be the arc structure, the afterbody of going up the arm lock and the afterbody of lower arm lock are as an organic whole through the tripe even to be equipped with the regulation hole of crescent in tripe department, the head of going up the arm lock is equipped with the latch hook, the top of latch hook is equipped with the centre gripping axle, and the inside of latch hook is equipped with the latch hook cavity of U-shaped, the lower surface of going up the arm lock is last clamping face, and the middle part of going up the clamping face is equipped with the protruding axle, and regular range has the bellying of a plurality of quantity on the last clamping face of protruding axle both sides, the head of arm lock is the connecting portion of point form down, and the bottom surface of connecting portion is the locating surface, the both sides of connecting portion are equipped with down the cramping body, the upper surface of arm lock is lower clamping face down, and the middle part of lower. The arc structure can take place to warp after the atress, through warping opening that realizes the ligature and press from both sides, goes up arm lock and lower arm lock structure as an organic whole, and the regulation hole of crescent is used for improving the deformability of tripe, and the latch hook of going up the arm lock head cooperatees with the connecting portion of lower arm lock head, realizes the locking of ligature clamp when the locating surface of connecting portion and the bottom surface contact of latch hook cavity, realizes opening of ligature clamp when the locating surface of connecting portion breaks away from with the bottom surface of latch hook cavity. Different from the prior art, when the latch hook cavity of the invention is contacted with the connecting part, a gap is still reserved in the latch hook cavity, after the blood vessel or tissue is clamped, the connecting part can automatically move leftwards to flatten the arc shape of the lower clamp arm, so that the interval between the upper clamp arm and the lower clamp arm is increased, the clamping force is reduced, the force release effect is achieved, the larger the clamped blood vessel or tissue is, the larger the left movement amount of the connecting part is, the more remarkable the force release effect is, and the problem that the blood vessel or tissue is damaged due to overlarge clamping force is effectively avoided.

Preferably, the ligating clip of the present invention is made of a biodegradable material. The ligation clip made of biodegradable materials can be automatically degraded after staying in a body for a period of time, any foreign matter can not be remained in the body, and the problem that the ligation clip forms the foreign matter in the body and is wrapped by tissues can be effectively solved.

Preferably, the width of the upper clamping shaft is larger than that of the upper clamping arm, and the lower clamping body is in a drop shape. The upper clamping shaft and the lower clamping body are used for being matched with a special clip applier and a special clip taking clamp to clamp, open and close the ligation clip.

Preferably, the position and size of the protruding shaft correspond to those of the groove. The convex shaft and the groove are used for limiting the axial movement of the ligation clip along the direction of the blood vessel, and the clamping firmness is improved. When the blood vessel is clamped, the blood vessel is bent downwards at the groove position to form a fold, and the convex shaft further presses the blood vessel downwards into the groove, so that the ligation clip is limited to slide back and forth along the direction of the blood vessel.

Preferably, the protrusions on the upper clamping surface and the protrusions on the lower clamping surface are distributed in a staggered manner, and the protrusions on different sides of the same clamping surface are distributed in a staggered manner. The projections distributed in a staggered manner are used for limiting the 'transverse' movement of the blood vessel in the ligation clip, so that the clamping firmness is further improved.

Preferably, the arc length of the upper clamping arm is greater than the sum of the arc length of the lower clamping arm and the contact length of the positioning surface. When the ligature clamp is used in an incorrect position due to misoperation during an operation or the operation scheme is temporarily changed in the operation, when the installed ligature clamp needs to be removed, the ligature clamp can be gradually flattened by using the clamp taking clamp, and because the arc length of the upper clamp arm is greater than the sum of the arc length of the lower clamp arm and the contact length of the positioning surface, when the ligature clamp is flattened to a certain degree, the positioning surface is separated from the bottom surface of the cavity of the lock hook, so that the ligature clamp is detached.

A method for disassembling an absorbable ligature clamp is characterized in that: the upper and lower binding clip that the utilization got the clamp is the centre gripping respectively and is absorbed last centre gripping axle and the lower clamping body of ligature clamp, contains whole ligature clamp inside the binding clip who gets the clamp to make the afterbody of tripe and the inner wall of getting the clamp top jail, then will get the clamp closure, make the ligature clamp be flattened gradually and break away from until the locating surface breaks away from with the bottom surface of latch hook cavity, accomplish the dismantlement.

Compared with the prior art, the invention has the following advantages and effects:

(1) the ligation clip is made of biodegradable materials, can be automatically degraded and absorbed after staying in a body for a period of time, has no foreign body residues, and can avoid tissue adhesion or obstruction in the body.

(2) The invention creatively prolongs the length of the cavity of the lock hook, so that a gap is still reserved in the cavity of the lock hook when the connecting part is contacted with the cavity of the lock hook, after a blood vessel or tissue is clamped, the connecting part can automatically move left to flatten the arc of the lower clamping arm, thereby increasing the interval between the upper clamping arm and the lower clamping arm, reducing the clamping force, achieving the force release effect, automatically adjusting the displacement according to the volume of the clamped blood vessel or tissue, always keeping the clamping force at a proper size, and protecting the blood vessel or tissue from overlarge pressure.

(3) According to the invention, the convex shaft arranged in the middle of the upper clamping surface and the groove arranged in the middle of the lower clamping surface limit the axial movement of the ligation clamp along the blood vessel direction, and the protrusions distributed in a staggered manner limit the transverse movement of the blood vessel on the ligation clamp, so that higher clamping firmness is realized.

(4) The clamp can be used for gradually flattening the ligation clamp, and as the arc length of the upper clamping arm is greater than the sum of the arc length of the lower clamping arm and the contact length of the positioning surface, when the ligation clamp is flattened to a certain degree, the positioning surface is separated from the bottom surface of the cavity of the locking hook, so that the ligation clamp can be disassembled.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic front view of the embodiment of the present invention.

FIG. 3 is a schematic diagram of a normally closed state of an embodiment of the present invention.

Fig. 4 is a schematic view of a clamped closed state of an embodiment of the invention.

Fig. 5 is a schematic view of an open state of an embodiment of the present invention.

Description of reference numerals: 1. an upper clamping arm; 2. a lower clamping arm; 3. louver blades; 4. an adjustment hole; 5. a latch hook; 6. an upper clamping shaft; 7. a latch hook cavity; 8. an upper clamping surface; 9. a protruding shaft; 10. a boss portion; 11. a connecting portion; 12. positioning the surface; 13. a lower clamping body; 14. a lower clamping surface; 15. and (4) a groove.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Examples are given.

Referring to fig. 1-5, an absorbable ligature clamp according to embodiments of the present invention includes an upper clamp arm 1 and a lower clamp arm 2.

The absorbable ligation clip provided by the embodiment of the invention is made of biodegradable materials, and the ligation clip made of the biodegradable materials can be automatically degraded after staying in a body for a period of time, so that any foreign matter can not be remained in the body, and the problem of tissue adhesion or obstruction caused by the formation of the foreign matter in the body of the ligation clip is effectively solved.

The upper clamping arm 1 and the lower clamping arm 2 are arc-shaped structures, the tail of the upper clamping arm 1 and the tail of the lower clamping arm 2 are connected into a whole through a louver 3, a crescent-shaped adjusting hole 4 is formed in the louver 3, the adjusting hole 4 is used for improving the elastic deformation capacity of the louver 3 and reducing the risk that a ligation clamp is broken at the louver 3, a locking hook 5 is arranged at the head of the upper clamping arm 1, an upper clamping shaft 6 is arranged at the top of the locking hook 5, the width of the upper clamping shaft 6 is larger than that of the upper clamping arm 1, a U-shaped locking hook cavity 7 is formed in the locking hook 5, the head of the lower clamping arm 2 is a pointed connecting part 11, the bottom surface of the connecting part 11 is a positioning surface 12, and two sides of the connecting part 11 are further provided with a water-drop-. The width of the lower clamping body 13 is the same as that of the upper clamping shaft 6, and both the lower clamping body and the upper clamping shaft are used for being matched with a special clip applier or clip extractor to realize the closing and opening of the ligation clip.

The lower surface of the upper clamping arm 1 is an upper clamping surface 8, the middle part of the upper clamping surface 8 is provided with a semi-cylindrical protruding shaft 9, the upper surface of the lower clamping arm 2 is a lower clamping surface 14, the middle part of the lower clamping surface 14 is provided with a groove 15, the size and the position of the protruding shaft 9 correspond to the size and the position of the groove 15, when the ligation clamp is closed and clamped on a blood vessel, the groove 15 enables the blood vessel to bend downwards at the position and form wrinkles, and the protruding shaft 9 can further press the blood vessel downwards into the groove 15, so that the ligation clamp is fixed at a certain position of the blood vessel, and the ligation clamp is prevented from sliding along the direction of the blood vessel.

In the embodiment of the invention, a plurality of convex parts 10 are regularly arranged on the upper clamping surface 8 on two sides of the convex shaft 9 and the lower clamping surface 14 on two sides of the groove 15, the convex parts 10 on the upper clamping surface 8 and the convex parts 10 on the lower clamping surface 14 are distributed in a staggered manner, the convex parts 10 on different sides of the same clamping surface are also distributed in a staggered manner, and the convex parts 10 are used for increasing the roughness of the clamping surface and limiting the transverse movement of blood vessels and the like in the ligation clip, thereby improving the clamping firmness.

The embodiment of the invention realizes the closing or opening of the ligating clip by the contact or the separation of the locking hook 5 and the connecting part 11 caused by the stressed deformation of the upper clamping arm 1 and the lower clamping arm 2. When the ligation clamp is in a normal closed state, the bottom surface of the lock hook cavity 7 is partially contacted with the positioning surface 12, a gap is reserved in the lock hook cavity 7 at the moment, when the ligation clamp clamps a blood vessel, the lower clamping arm 2 enables the connecting part 11 to automatically move left under the extrusion effect of the blood vessel, the radian of the lower clamping arm 2 is flattened, the interval between the upper clamping arm 1 and the lower clamping arm 2 is increased, the clamping force is reduced, the force releasing effect is achieved, the thicker the clamped blood vessel is, the longer the distance of the left movement of the connecting part 11 is, the more remarkable the force releasing effect is, the structural design can protect the blood vessel from overlarge pressure, and the problem that the blood vessel is damaged due to overlarge clamping force is avoided.

The arc length of the upper clamping arm 1 is larger than the sum of the arc length of the lower clamping arm 2 and the contact length of the positioning surface 12. The ligating clips must also be constructed to allow for active disassembly, as the ligating clips may be used in an incorrect position during an actual procedure due to mishandling or temporary changes to the surgical plan during the procedure may require removal of the installed ligating clip. Only when the arc length of the upper clamping arm 1 is greater than the sum of the arc length of the lower clamping arm 2 and the contact length of the positioning surface 12, the positioning surface 12 can be completely separated from the bottom surface of the locking hook cavity 7 in the process that the ligation clamp is flattened under the action of external force, and therefore the disassembly work is completed.

The ligation clip provided by the embodiment of the invention is disassembled by taking the clamp, and the specific disassembling method comprises the following steps: the upper clamp head and the lower clamp head of the clamp are used for respectively clamping the upper clamping shaft 6 and the lower clamping body 13 capable of absorbing the ligation clamp, the whole ligation clamp is contained inside the clamp head of the clamp, the tail part of the louver 3 is firmly propped against the inner wall of the clamp, then the clamp is closed, the ligation clamp is gradually flattened until the positioning surface 12 is separated from the bottom surface of the lock hook cavity 7, and the disassembly is completed.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an absorbable ligature clamp, includes arm lock (1) and lower arm lock (2), its characterized in that: the upper clamping arm (1) and the lower clamping arm (2) are of arc-shaped structures, the tail of the upper clamping arm (1) and the tail of the lower clamping arm (2) are connected into a whole through a louver (3), a crescent-shaped adjusting hole (4) is formed in the position of the louver (3), a locking hook (5) is arranged at the head of the upper clamping arm (1), an upper clamping shaft (6) is arranged at the top of the locking hook (5), a U-shaped locking hook cavity (7) is arranged inside the locking hook (5), the lower surface of the upper clamping arm (1) is an upper clamping surface (8), a protruding shaft (9) is arranged in the middle of the upper clamping surface (8), a plurality of protruding parts (10) are regularly arranged on the upper clamping surfaces (8) on two sides of the protruding shaft (9), the head of the lower clamping arm (2) is a pointed connecting part (11), the lower surface of the connecting part (11) is a positioning surface (12), and lower clamping bodies (13) are arranged on two sides of, the upper surface of the lower clamping arm (2) is a lower clamping surface (14), a groove (15) is formed in the middle of the lower clamping surface (14), and a plurality of convex parts (10) are regularly arranged on the lower clamping surface (14) on two sides of the groove (15).

2. The absorbable ligature clip of claim 1, wherein: the ligature clamp is made of biodegradable materials.

3. The absorbable ligature clip of claim 1, wherein: the width of the upper clamping shaft (6) is greater than that of the upper clamping arm (1), and the lower clamping body (13) is in a water-drop shape.

4. The absorbable ligature clip of claim 1, wherein: the position and the size of the protruding shaft (9) correspond to the position and the size of the groove (15).

5. The absorbable ligature clip of claim 1, wherein: the convex parts (10) on the upper clamping surface (8) and the convex parts (10) on the lower clamping surface (14) are distributed in a staggered mode, and the convex parts (10) on different sides of the same clamping surface are distributed in a staggered mode.

6. The absorbable ligature clip of claim 1, wherein: the arc length of the upper clamping arm (1) is greater than the sum of the arc length of the lower clamping arm (2) and the contact length of the positioning surface (12).

7. A method of removing the absorbable ligature clip of any one of claims 1-6, wherein: the upper clamp head and the lower clamp head of the clamp are respectively used for clamping an upper clamping shaft (6) and a lower clamping body (13) which can absorb the ligation clamp, the whole ligation clamp is contained inside the clamp head of the clamp, the tail part of the louver (3) is firmly propped against the inner wall of the clamp, then the clamp is closed, the ligation clamp is gradually flattened until the positioning surface (12) is separated from the bottom surface of the lock hook cavity (7), and the disassembly is completed.