A kind of hemostatic clampTechnical field
The present invention relates to a kind of hemostatic clamp, belong to medical instrument.
Background technology
Metal clip hemostasis is one of hemostasis means of relatively broad application under scope, and skilled metal is carried out to appropriate caseFolder operation, effectively can stop blooding and prevent bleeding again, reduce adverse reaction, greatly improve the safety of hemorrhage of digestive tract therapeutic endoscopyProperty and cure rate.The hemostatic mechanism of metal hemostatic clamp and surgery vascular ligature or suture identical, be a kind of physical mechanical method, sharpThe mechanical force caused by hemostatic clamp closes, its surrounding tissue and bleeding vessel are ligatured in the lump, so that the blood vessel of bleeding is closed,Hemostasis purpose is reached with blocking blood flow, is controlled suitable for nonvariceal active hemorrhage and the hemostasis of visible vessels stump lesionTreat.
There is the shortcomings that not easy to operate in existing hemostatic clamp, hemostatic clamp can not carry out tentative operation, once closure can not be againSecondary opening, if there is operation error, partial hemostasis folder will be discarded directly.Accordingly, it is desirable to provide one kind is in grip tissueFolding is repeated before, and locked hemostatic clamp can be achieved after grip tissue.Such as in Chinese invention patentHemostatic clamp disclosed in ZL201410222753.7 includes clamp assemblies and holder, and clamp assemblies include sequentially connected clipBody and steel wire buckle；Holder front end is equipped with fixed pin shaft, and clip body is made of two clamping limbs, and the tail end of two clamping limbs leads toActive pin shaft connection is crossed, a sliding slot is respectively provided with the middle part of two clamping limbs, fixed pin shaft passes through sliding slot, and two clamping limbs edges are slidingGroove moves back and forth the opening and closing to form clip body；The end of sliding slot is equipped with bending structure, when clamping limb is moved so that fixed pin shaftWhen in bending structure, two clamping limbs are in locked closed position.Above-mentioned hemostatic clamp pulls active pin shaft by steel wire buckleFolding to clip body is controlled, and realizes the release of hemostatic clamp.Component used in the hemostatic clamp is more, systemIt is big to make difficulty, and assembly reliability and stability are poor, there is a phenomenon where have not been used just to loosen.
In addition, existing hemostatic clamp is generally made using metal material, after its realization clamping hemostasis, with being cured for the surface of a woundClose, can voluntarily come off, and excreted along alimentary canal.Since it is needed by alimentary canal, inevitably to people in vivoBody causes to damage, and for part population, danger caused by hemostatic clamp delay also easily occurs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of hemostatic clamp simple in structure.
To achieve these goals, the present invention uses following technical proposals：
A kind of hemostatic clamp, including fixed frame, two collets and ball-head tension rod being oppositely arranged；
The front end of the fixed frame is equipped with fixed pin shaft, and the fixed pin shaft, which is each passed through, to be arranged in two colletsThe sliding slot in portion, and one end of the collet is limited in the inside of the fixed frame；
Hemisphere shell mould connecting portion is respectively arranged with the rear end of two collets；
The ball-head tension rod includes pull rod and the bulb for being arranged on the pull rod front end, and the bulb is limited in two institutesState the inside of hemisphere shell mould connecting portion；
The reciprocating motion of the bulb forms the reciprocating motion of the collet, meanwhile, under the action of the fixed pin shaft,Form the folding of two collets.
Wherein more preferably, formed with protrusion on the outer wall of the hemisphere shell mould connecting portion；Set on the inner wall of the fixed frameIt is equipped with the annular flange around central shaft distribution；It is stuck in the convex annular that the protrusion is moved to after the hemisphere shell mould connecting portionDuring edge rear, two collets are in closed locked position.
Wherein more preferably, described raised and described flange has inclined transition face respectively.
Wherein more preferably, the sliding slot is obliquely installed in the middle part of the collet, and in the sliding slot away from the hemisphereOne end of shell mould connecting portion is equipped with bending structure, when the fixed pin shaft is moved in the bending structure, two foldersHead is in closed locked position.
Wherein more preferably, the front portion of two collets is the shell of internal buckle；The front end of two collets forms oriented closeClose the sawtooth of direction extension.
Wherein more preferably, being moved after the bulb deforms the hemisphere shell mould connecting portion, the bulb and the hemispherical ShellType coupling part from.
Wherein more preferably, connecting tube is further included and by annular flake and the integrally formed connection sheet of multiple fins；
The rear portion of the fixed frame and the front portion of the connecting tube are correspondingly arranged on multiple connecting holes；
The fin sequentially passes through the correspondence connecting hole of the connecting tube and the fixed frame, makes the fixed frame and describedConnecting tube connects；
The center back of the pull rod of the ball-head tension rod through the annular flake extends；Being moved after the bulb makes the companyContact pin deforms, and the fin is departed from from the connecting hole of the fixed frame.
Wherein more preferably, the connection sheet is made of the annular flake and three fins；Wherein, three wingsPiece is distributed using the center of the annular flake as the center of circle in 120 ° of angles respectively.
Wherein more preferably, the bulb is fixed on the front end of the pull rod by the connecting rod；The connecting rod it is straightFootpath is less than the diameter of the bulb and the diameter of the pull rod.
Wherein more preferably, the fixed frame, the collet and the fixed pin shaft are made of degradable biological material.
Hemostatic clamp provided by the present invention, collet is realized by the cooperation of ball-head tension rod and two hemisphere shell mould connecting portionsThe separation of folding, closed-lock and collet, fixed frame and rear portion connecting tube.The hemostatic clamp have it is simple in structure, it is easy to operate,And the advantages of operational stability is high, is that one kind is suitable for widely used hemostatic clamp.
Brief description of the drawings
Fig. 1 is the structure diagram of hemostatic clamp provided by the present invention；
Fig. 2 is the internal structure schematic diagram of hemostatic clamp shown in Fig. 1；
Fig. 3 is the structure diagram of fixed frame in hemostatic clamp shown in Fig. 2；
Fig. 4 is the A-A schematic cross-sectional views of fixed frame shown in Fig. 3；
Fig. 5 is the schematic elevation view of collet in hemostatic clamp shown in Fig. 2；
Fig. 6 is the schematic rear view of collet in hemostatic clamp shown in Fig. 2；
Fig. 7 is the schematic perspective view of collet in hemostatic clamp shown in Fig. 2；
Fig. 8 is the dimensional structure diagram of connecting tube in hemostatic clamp shown in Fig. 2；
Fig. 9 is the B-B schematic cross-sectional views of connecting tube shown in Fig. 8；
Figure 10 is the structure diagram of ball-head tension rod in hemostatic clamp shown in Fig. 2；
Figure 11 is the structure diagram of connection sheet in hemostatic clamp shown in Fig. 2；
Figure 12 is the first variable condition schematic diagram of hemostatic clamp shown in Fig. 2；
Figure 13 is second of variable condition schematic diagram of hemostatic clamp shown in Fig. 2；
Figure 14 is the third variable condition schematic diagram of hemostatic clamp shown in Fig. 2.
Embodiment
The technology contents of the present invention are done with specific embodiment below in conjunction with the accompanying drawings and are further described in detail.
As depicted in figs. 1 and 2, hemostatic clamp provided by the present invention, including 1, two collet being oppositely arranged 2 of fixed frame,Connecting tube 4 and ball-head tension rod 5.Wherein, fixed pin shaft 3 is equipped with the front end of fixed frame 1, fixed pin shaft 3, which is each passed through, to be arranged onThe sliding slot 26 at the middle part of two collets 2, and one end of collet 2 is limited in the inside of fixed frame 1.Set respectively in the rear end of collet 2It is equipped with hemisphere shell mould connecting portion 23；Ball-head tension rod 5 includes pull rod 50 and the bulb 51 for being arranged on 50 front end of pull rod, ball-head tension rod 5Bulb 51 be limited in the inside of two hemisphere shell mould connecting portions 23；With the reciprocating motion of bulb 51, collet 2 carries out back and forthMovement, at the same time, under the action of fixed pin shaft 3, forms the folding of two collets 2.Fixed frame 1 and connecting tube 4 pass through companyConnection is realized in contact pin 6, and post-tensioning ball-head tension rod 5 makes connection sheet 6 deform the separation for realizing fixed frame 1 and connecting tube 4.
Specifically, as shown in Figure 3 and Figure 4, fixed frame 1 includes tube body 10, and two independences are formed in the front end of tube body 10The branch upwardly extended, through hole 11 is respectively arranged with the correspondence position of Liang Ge branches.Fixed pin shaft 3, which is each passed through, is arranged on twoThe sliding slot 26 at a middle part of collet 2, and its both ends is each passed through through hole 11 and fixes, so that two collets 2 are limited in fixationBetween the Liang Ge branches of frame 1.Collet 2 can carry out open and close movement in the region between Liang Ge branches.
As shown in figure 4, in the lower part of tube body 10 formed with two stair-stepping regions, the first area 14 on top and lower partSecond area 15.Wherein, the internal diameter of first area 14 is more than the distance between Liang Ge branches, the top difference of first area 14Bottom with Liang Ge branches forms a up big and down small passage, passage connects with first area 14 by inclined plane transitionInlet diameter is less than the internal diameter of first area 14, so as to be internally formed the annular flange 13 around central shaft distribution in fixed frame 1.Under the action of ball-head tension rod 5, the hemisphere shell mould connecting portion 23 of two collets 2 is entered in first area 14 by above-mentioned passage, fromAnd make the protrusion 25 that is set on its outer wall stuck in the lower part of annular flange 13, realize closed-lock.
The internal diameter of second area 15 is more than the internal diameter of first area 14, and three connections are formed on the inner wall of second area 15Hole 12, the connection of fixed frame 1 and connecting tube 4 is realized for coordinating with connection sheet 6.Second area 15 has inclined inner wall, justDepart from connection sheet 6 from the connecting hole 12 of fixed frame 1.
According to Fig. 5, Fig. 6 and Fig. 7, the front portion of collet 2 is the shell 21 of internal buckle, and middle part is intermediate connecting body 22, rear endIt is provided with hemisphere shell mould connecting portion 23.Wherein, the sawtooth 27 of oriented closing direction extension is formed in the front end of shell 21, is used for realizationClamp.Formed with inclined sliding slot 26, the one end of sliding slot 26 away from hemisphere shell mould connecting portion 23 on the intermediate connecting body 22 of collet 2Equipped with bending structure 26b, when fixed pin shaft 3 slides into the position of bending structure 26b from the tilting zone 26a of sliding slot 26, twoA collet is in closed locked position.
The hemisphere shell mould connecting portion 23 of two collets 2 has opposite opening direction, for by the bulb 50 of ball-head tension rod 5It is limited in the inside of two hemisphere shell mould connecting portions 23.The structure of ball-head tension rod 5 is as shown in Figure 10, and ball-head tension rod 5 includes pull rod50 and be arranged on the bulb 51 of 50 front end of pull rod, bulb 51 is fixed on the front end of pull rod 50 by connecting rod 52, bulb 51 it is straightFootpath is more than pull rod 50 and the diameter of connecting rod 52, also, the diameter of connecting rod 52 is less than the diameter of pull rod 50, so that connecting rod 52Form elongated neck.Jagged 24 are formed on each hemisphere shell mould connecting portion 23, for accommodating the connecting rod of ball-head tension rod 552, by pulling ball-head tension rod 5, being moved after bulb 51 deforms hemisphere shell mould connecting portion 23, and ball-head tension rod 5 is connected with hemisphere shell mouldPortion 23 separates.
In addition, as shown in fig. 6, on the outer wall of hemisphere shell mould connecting portion 23 formed with protrusion 25, for in fixed frame 1The annular flange 13 in portion coordinates；When being moved up into after hemisphere shell mould connecting portion 23 in the first area 14 of fixed frame 1, protrusion 25 is blockedExtremely at the rear of annular flange 13, closed-lock is realized.For the ease of pulling ball-head tension rod 5, protrusion 25 and flange 13 have respectivelyThere is inclined transition face.
The structure of connecting tube 4 as shown in Figure 8 and Figure 9, including stair-stepping two tube bodies, wherein, first positioned at front endThe outside diameter and internal diameter of tube body 41 are respectively smaller than the outside diameter and internal diameter of the second tube body 40 of rear end, are opened on the side wall of the first tube body 41Equipped with connecting hole 42 corresponding with the connecting hole 12 of fixed frame 1, the larger cavity 43 of internal diameter is internally formed in the second tube body 40, justIn the movement of ball-head tension rod 5 and the flexible connecting member being attached thereto.In addition, the outer wall of the first tube body 41 can be and fixed frame 1The identical inclined-plane of 15 inner wall inclination of second area, consequently facilitating connecting tube 4 is separated with fixed frame 1.
The structure of connection sheet 6 is as shown in figure 11, and connection sheet 6 includes annular flake 60 and three fins 61, annular flake 60It is integrally formed with fin 61, also, three fins 61 are respectively that the center of circle is divided in 120 ° of angles using the center of annular flake 60Cloth.The fin 61 of connection sheet 6 sequentially passes through the correspondence connecting hole 42 and 12 of connecting tube 4 and fixed frame 1, makes fixed frame 1 and connectionPipe 4 connects.The center back of the pull rod 50 of ball-head tension rod 5 through annular flake 60 extends.Being moved to after bulb 51 makes connection sheet 6Deformation, the fin 61 of connection sheet 6 depart from from the connecting hole 12 of fixed frame 1, and connecting tube 4, connection sheet 6 and fixed frame 1 separate.WhenSo, the quantity for fin being set in connection sheet 6 can also be other numbers, make itself and the company that is arranged on fixed frame 1 and connecting tube 4The quantity for connecing hole is consistent.
The structure of hemostatic clamp provided by the present invention is described above, below in conjunction with the accompanying drawings 2,12 to 14 pairs of attached drawingThe use process of the hemostatic clamp is described in detail.
Folding condition of the hemostatic clamp in tentative operation is respectively as shown in Fig. 2 and Figure 12.It is reciprocal with ball-head tension rod 5Movement, collet 2 can multiple folding.In this process, fixed pin shaft 3 slides in the tilting zone 26a of sliding slot 26, collet 2Hemisphere shell mould connecting portion 23 it is movable between the Liang Ge branches of fixed frame 1.
As shown in figure 13, when hemostatic clamp clamps destination organization, hemisphere shell mould connecting portion 23 is made by post-tensioning ball-head tension rod 5Be moved rearwards, when protrusion 25 it is stuck at the rear of the flange 13 of fixed frame 1 when, two collets 2 are in closed locked position.With thisMeanwhile fixed pin shaft 3 is slid into the bending structure 26b of sliding slot 26, genlocing.
Continue to pull back ball-head tension rod 5, as shown in figure 14, ball-head tension rod 5 deforms hemisphere shell mould connecting portion 23, bulb51 separate with hemisphere shell mould connecting portion 23.Ball-head tension rod 5 is pulled on, bulb 51 deforms connection sheet 6, and makes connection sheet 6Fin 62 departs from from the connecting hole 12 of fixed frame 1, and connecting tube 4 and fixed frame 1 separate, then, connecting tube 4,5 and of ball-head tension rodConnection sheet 6 is moved rearwards together.
The structure to hemostatic clamp provided by the present invention and its tentative operation, closed-lock and separation process carry out aboveIt is described in detail.After fixed frame 1 and connecting tube 4 separation of hemostatic clamp, fixed frame 1, collet 2 and fixed pin shaft 3 are retained in peopleExternal for the ease of discharging it in body alimentary canal, the part or all of recommendation in fixed frame 1, collet 2 and fixed pin shaft 3 makesIt is made of degradable biological material, so that during hemostatic clamp stops blooding, above-mentioned component can progressively decompose simultaneously final thoroughDischarge human external in bottom.
In conclusion hemostatic clamp provided by the present invention, passes through the cooperation of ball-head tension rod and two hemisphere shell mould connecting portionsRealize the folding of collet.Moreover, cooperation of the hemostatic clamp using ball-head tension rod and connection sheet, realizes collet, fixed frame with afterThe separation of portion's connecting tube.The hemostatic clamp has the advantages of simple in structure, easy to operate, and operational stability is high, is a kind of suitableIn widely used hemostatic clamp.
Hemostatic clamp provided by the present invention is described in detail above.To those skilled in the art, existTo any obvious change that it is done on the premise of without departing substantially from true spirit, it will all belong to patent right of the present inventionProtection domain.