CN109620344A - Disposable degradable hemostatic clip - Google Patents

Abstract

The invention discloses a kind of disposable degradable hemostatic clamps, including two degradable intermediate plates, drawing bracket, the neck of hook and degradable casing, two degradable intermediate plates to be separately positioned on two front end portions of drawing bracket；Pull the bottom of bracket and the front end clasp joint of the neck of hook；Drawing bracket and the neck of hook are assembled in degradable casing.Disposable degradable hemostatic clamp provided by the present invention makes degradable intermediate plate and degradable casing by using degradation material, so that it is degradable that hemostatic clamp, which is trapped in intracorporal part,.Meanwhile the disposable degradable hemostatic clamp, the metal parts being applied in combination with degradable part is additionally provided, the separation and delay of degradable collet segment are realized, improves the mechanical strength of disposable degradable hemostatic clamp in operation.

Description

Disposable degradable hemostatic clamp

Technical field

The present invention relates to a kind of disposable degradable hemostatic clamps, belong to the field of medical instrument technology.

Background technique

Laparoscopic surgery starts from the eighties in last century, and China introduces this Minimally Invasive Surgery in the early 1990s.Operation is facedRelatively hemostatic clamp is mostly used to stop blooding on bed, operation is relatively easy, and haemostatic effect is preferable.The more common main right and wrong of hemostatic clamp materialDegradation metal material hemostatic clamp and degradable macromolecule hemostatic clamp.These two types of hemostatic clamps clinically have use, but all existSome problems.

Titanium alloy hemostatic clamp is the clinically used metal hemostatic clamp of current laparoscopic surgery, although smaller to human toxicity,But the problems such as its permanent retention can bring Ion release inflammation, interference images diagnosis in vivo and patients ' psychological is caused to bear.Although absorbable macromolecule hemostatic clamp can degrade in vivo, the mechanical strength of high molecular material is insufficient, when Pressure value being caused to maintainBetween it is limited, and product cost is excessively high.

In addition, the improvement now for degradable hemostatic clamp is all concentrated on substantially and improved to the material of hemostatic clamp, lackFew structure design being used in combination with degradable material.

Summary of the invention

Technical problem to be solved by the present invention lies in provide a kind of disposable degradable hemostatic clamp.

In order to achieve the above technical purposes, the present invention adopts the following technical solutions:

A kind of disposable degradable hemostatic clamp, including two degradable intermediate plates, drawing bracket, the neck of hook and degradable casing,Two degradable intermediate plates are separately positioned on two front end portions of the drawing bracket；The bottom of the drawing bracket and the neck of hookFront end clasp joint；The drawing bracket and the neck of hook are assembled in the degradable casing.

Wherein more preferably, the material of the degradable intermediate plate and the degradable casing is PLLA, used PLLA materialThe molecular weight of material is greater than 220,000.

Wherein more preferably, two degradable intermediate plates are separately provided for accommodating drawing bracket for the side of clampingFront end portion elongated slot；It is provided in the elongated slot and the degradable integrally formed connecting column of intermediate plate；The drawing branchThe front end portion of frame is provided with corresponding connecting hole.

Wherein more preferably, the depth of the elongated slot is equal with the drawing thickness of bracket.

Wherein more preferably, the drawing bracket has symmetrical two parts, pulls the bottom bend of bracket into connectionHook；Left side brackets and right side bracket are bent camber from the bottom of drawing bracket respectively outward, after being then return to middle part intersectionThe side's of continuing up extension forms the front end portion for being embedded in elongated slot.

Wherein more preferably, the process that the left side brackets and the right side bracket extend after middle part intersects to front end portionIn be also respectively formed with one section of outwardly projecting arc, the side wall in the outside of the outermost of the arc and the degradable intermediate plateWith contour plane.

Wherein more preferably, limiting slot is provided on the inner wall of the degradable casing；The degradable intermediate plate is close to describedThe positive stop strip of protrusion is provided on the outside side wall of degradable casing.

Wherein more preferably, the disposable degradable hemostatic clamp further includes circlip and the second casing；The circlip has moreA connection pawl, each connection pawl sequentially pass through the aperture being correspondingly arranged on second casing and the degradable casing, willThe degradable casing is together with second casing connection.

Wherein more preferably, the neck of hook is connect after the centre bore of the circlip with control line.

Wherein more preferably, the rear end of second casing is fixed with bourdon tube.

Disposable degradable hemostatic clamp provided by the present invention, makes degradable intermediate plate by using degradation material and canDegradation casing, so that it is degradable that hemostatic clamp, which is trapped in intracorporal part,.Meanwhile the disposable degradable hemostatic clamp, alsoThe metal parts being used in combination with degradable part is provided, while realizing hemostatic clamp release, improves degradable hemostasisThe mechanical strength of folder, so that the practicability of degradable hemostatic clamp is improved significantly.

Detailed description of the invention

Fig. 1 is the decomposition diagram of disposable degradable hemostatic clamp provided by the present invention；

Fig. 2A and Fig. 2 B is the schematic front view and schematic side view of degradable intermediate plate respectively；

Fig. 3 is the structural schematic diagram for pulling bracket；

Fig. 4 is the structural schematic diagram of the neck of hook；

Fig. 5 A and Fig. 5 B are the schematic top plan view and schematic front view of circlip respectively；

Fig. 6 is the structural schematic diagram of the disposable degradable hemostatic clamp after assembling；

Fig. 7 is the status diagram that degradable intermediate plate is closed and locks；

Fig. 8 is the structural schematic diagram for being trapped in intracorporal degradable part.

Specific embodiment

Technical solution of the present invention is further described in detail with specific embodiment with reference to the accompanying drawing.

Disposable degradable hemostatic clamp provided by the present invention, using degradation material, (such as bio-medical material PLLA is (leftRotation polylactic acid)) combine with metal material (for example, stainless steel material) and is made.Above-mentioned disposable degradable hemostatic clamp is detained internalClip portion be using made of degradation material, other, which are not detained intracorporal part, to be made of metal material, and lead toCross the mechanical strength that these metal parts play the role of enhancing hemostatic clamp.

Specifically, as shown in Figure 1, disposable degradable hemostatic clamp provided by the present invention, including two degradable foldersPiece 1, drawing bracket 2, the neck of hook 3, degradable casing 4, the second casing 5, circlip 6 and it is some with control handle it is matching used otherAccessory.

Wherein, two degradable intermediate plates 1 and degradable casing 4, which form, is finally detained intracorporal clip portion (referring to Fig. 8),Both it is made using degradation material.For example, can both be made of PLLA (l-lactic acid) material, PLLA material isA kind of degradation material for being widely used in human body approved through obtaining CFDA.In the present invention, it manufactures degradable intermediate plate 1 and can dropThe molecular weight of PLLA material used in casing 4 is solved on 220,000.The machinery for improving PLLA material by adding molecular amount is strongDegree, to guarantee that there is certain clamping force when clamping soft tissue and blood vessel.Although adding molecular amount can postpone the complete drop of PLLAThe time is solved, but since PLLA material is eventually degradable, when so as to solve current part endoscope treatment, due to titaniumFolder etc. cannot degrade, and non-degradable material is caused to be detained the problem for causing other adverse reactions in vivo.Certainly, two degradable foldersPiece 1 and degradable casing 4 also can be used other degradation materials used for biomedicine and be made.

Two degradable intermediate plates 1 provided by the invention have identical or symmetrical structure, when two it is degradableIntermediate plate 1 is locked at the inside of degradable casing 4, and target soft tissue or target blood can be clamped in two degradable intermediate platesBetween 1.

As shown in Figure 2 A and 2B, in the side that two degradable intermediate plates 1 are oppositely arranged (side i.e. for clamping) differenceIt is provided with the elongated slot 1a of the front end portion 2a for accommodating drawing bracket 2；The thickness phase of the depth of elongated slot 1a and drawing bracket 2Deng so that the adjacent part for pulling bracket 2 and elongated slot 1a forms smooth table after guaranteeing that pulling bracket 2 is caught in above-mentioned elongated slot 1aFace (referring to Fig. 6) avoids causing accidental injury to target soft tissue or target blood.The connection of protrusion is provided in elongated slot 1aColumn 1b, connecting column 1b and degradable intermediate plate 1 are integrally formed, and connecting column 1b is used for and is arranged in 2 front end portion 2a of hemostatic clamp bracketIn connecting hole 2b cooperation, realize drawing bracket 2 and degradable intermediate plate 1 connection.In the outside of degradable intermediate plate 1 (close to canDegrade casing 4 side) side wall on be provided with the positive stop strip 1c outwardly protruded, be used for and be arranged in degradable 4 inner wall of casingOn limiting slot 4a cooperation, realize the locking function of clip portion.

Degradable casing 4 is one section of round tube made of degradation material PLLA；It is provided on its inner wall and its oneMolding limiting slot 4a.Limiting slot 4a be used for degradable intermediate plate 1 is set outside side wall on positive stop strip 1c cooperate, realizeLocking function.As shown in fig. 7, being pulled degradable intermediate plate 1 in degradable casing 4 by pulling bracket 2, positive stop strip 1c is caught in limitIn the slot 4a of position, the locked of degradable intermediate plate 1 is realized.The rear end of degradable casing 4 is provided with thinned cavity wall, for by second setThe front end of pipe 5 is inserted.It is formed with the contour aperture of a row in the cavity wall that degradable 4 rear end of casing is thinned, for realizingWith the connection of the second casing 5.

The other parts being used cooperatively with above-mentioned degradable clip portion are introduced below.Wherein, bracket is pulled2, the neck of hook 3, the second casing 5 and circlip 6 can be made of stainless steel material.The present invention to degradable intermediate plate 1 by providingThe drawing bracket 2 and the neck of hook 3 made by stainless steel material can pull while providing structural support to degradable intermediate plate 1Degradable intermediate plate 1 is mobile, to realize the closure of two degradable intermediate plates 1, locked separation.

As shown in figure 3, drawing bracket 2 is the integrated elastic bracket formed after torsional deformation by same sheet metal,With with digital 8 similar shapes.Pulling bracket 2 has symmetrical two parts, pulls the bottom bend of bracket 2 into connectionHook 2c；Left side brackets and right side bracket are bent camber from the bottom of drawing bracket 2 respectively outward, are then return to middle part and intersectAfter continue to extend upwards, to form front end portion 2a for being embedded in elongated slot 1a.In the front end portion 2a of drawing bracket 2In be respectively formed with connecting hole 2b, connecting hole 2b is used to cooperate with connecting column 1b, so that two degradable intermediate plates 1 be fixed respectivelyOn two front end portions of drawing bracket 2.In addition, left side brackets and right side bracket extend after middle part intersects to front end portionDuring be also respectively formed with one section of outwardly projecting arc 2d, when degradable intermediate plate 1 be mounted on drawing bracket 2 front endWhen dividing 2a, the side wall in the outside of the outermost of arc 2d and degradable intermediate plate 1 has plane in the roughly same height, so that drawingDuring dynamic drawing bracket 2, degradable intermediate plate 1 can enter in degradable casing 4 without barrier.

As shown in figure 4, the front end of the neck of hook 3 is the end being relatively large in diameter, it is provided with and cooperates with the hook-type of connecting hook 2cHook-shaped groove 3a, by by pull 2 bottom of bracket connecting hook 2c be caught in the hook-shaped groove 3a of 3 front end of the neck of hook, realize drawing branchThe clasp joint of frame 2 and the neck of hook 3.The rear end of the neck of hook 3 is one section of cylindrical connecting rod 3b, passes through the tail end by control line from the neck of hook 3It is inserted into fixed in connecting rod 3b, the connection of the realization neck of hook 3 and control line.

Second casing 5 is one section of round tube.The front end of second casing 5 processes the cavity wall being thinned from outside, before the second casing 5The internal diameter for holding the rear end of outer diameter and degradable casing 4 that cavity wall is thinned that cavity wall is thinned is equal.Thinned chamber in 5 front end of the second casingThe contour aperture of a circle is provided in wall, after multiple apertures of 5 front end of the second casing are set and degradable casing 4 is setMultiple apertures at end are corresponding.

Circlip 6 shown in fig. 5 is formed by ring portion 6a and with the integrally formed multiple connection pawl 6c of ring portion 6a.Ring portion 6a'sCenter is formed with centre bore 6b, and multiple connection pawl 6c are symmetricly set on the periphery of ring portion 6a.By the way that pawl 6c will be connected successivelyIt is inserted into the aperture being correspondingly arranged on the second casing 5 and degradable casing 4, realizes the company of the second casing 5 and degradable casing 4It connects.In this embodiment, the setting of circlip 6 is respectively arranged on degradable casing 4 and the second casing 5 there are three pawl 6c is connectedThree apertures corresponding with connection pawl 6c.Connection pawl 6c be inserted into degradable casing 4 and the second casing 5 sequence can also with it is above-mentionedSequence according to the structure of degradable casing 4 and the second casing 5 on the contrary, specifically determine.Connecting degradable casing 4 and the second casingWhen 5, first the two is seated, then the connection pawl 6c of circlip 6 is inserted into corresponding aperture, completes the connection of the two.When degradableAfter casing 4 and the connection of the second casing 5, the rear end of the neck of hook 3 is passed through from the centre bore of circlip 6, and is connect with control line.CenterThe diameter of hole 6b is greater than the diameter of the connecting rod 3b of 3 rear end of the neck of hook, but is less than the diameter of 3 front end of the neck of hook.The neck of hook 3 is pulled back,When the end of the neck of hook 3 acts on the centre bore 6b of circlip 6, circlip 6 is forced to deform, the connection pawl 6c of circlip 6 is shunk, degradableCasing 4 and the second casing 5 disconnect.

The assembling process of disposable degradable hemostatic clamp provided by the invention is introduced below.

When assembling disposable degradable hemostatic clamp, before two degradable intermediate plates 1 are mounted on drawing bracket 2 firstThe front end of the bottom for pulling bracket 2 and the neck of hook 3 is hooked at end；Secondly, by 5 grafting of degradable casing 4 and the second casing, thenDegradable casing 4 and the second casing 5 are fixed together by circlip 6；Third, by the neck of hook 3 after the centre bore 6b of circlip 6It is connect with control line；Finally, bourdon tube is connect with the second casing 5, the assembling process of disposable degradable hemostatic clamp is completed.

As described above, disposable degradable hemostatic clamp provided by the present invention, has knot as shown in FIG. 6 when unusedStructure.Two degradable intermediate plates 1 are separately fixed at the front end of drawing bracket 2, and the connecting hook 2c of drawing bracket 2 hooks the hook of the neck of hook 3Shape slot 3a；Degradable casing 4 and the second casing 5 are set in the outside of drawing bracket 2 and the neck of hook 3, degradable casing 4 and second setPipe 5 is fitted together by circlip 6；The rear end of the neck of hook 3 is connect after passing through the centre bore of circlip 6 with control line, and control line is from bulletIt passes through and is connected on the control handle in control handle in reed pipe；The rear end of second casing 5 and one end of bourdon tube are fixed, bulletThe other end of reed pipe is fixed on the shell of control handle.Since limited position mechanism is arranged on control handle, so that degradable folderPiece 1 can only partially enter degradable casing 4, so that original state of the clip portion in closure.It is connect by promotion with the neck of hook 3Bracelet, degradable intermediate plate 1 can also be opened and are closed again.

During use, by pulling back the neck of hook 3, the neck of hook 3 pulls drawing bracket 2, drives two degradable foldersPiece 1 enters degradable casing 4, and two degradable intermediate plates 1 are closed, and lock two degradable intermediate plates 1 in degradable casing 4Portion (as shown in Figure 7)；Continue to pull back the neck of hook 3, the neck of hook 3 drives drawing bracket 2 to be broken connecting column 1b, drawing bracket 2 withDegradable intermediate plate 1 separates；The neck of hook 3 is pulled on, the neck of hook 3 forces circlip 6 to deform, and receives in three connection pawl 6c of circlip 6, in successionIt is retracted from the aperture of degradable casing 4, so that the second casing 5 and degradable casing 4 be made to separate.To in addition to as shown in Figure 8Degradable intermediate plate 1 and degradable casing 4 be detained in vivo and in vitro, remaining part made of metal (including drawing bracket2, the neck of hook 3, the second casing 5 and circlip 6) it is withdrawn from vitro with the biopsy forceps pincers road that bourdon tube and control line pass through endoscope.

In conclusion disposable degradable hemostatic clamp provided by the present invention, provide by degradation material production canDegradation intermediate plate and degradable casing, so that it is degradable to be trapped in intracorporal collet segment.Meanwhile it additionally providing and degradable portionThe metal parts that subassembly uses realizes the separation and delay of degradable collet segment, improves disposable degradable hemostasisThe mechanical strength of folder in operation, so that the practicability of degradable hemostatic clamp is improved significantly.

Disposable degradable hemostatic clamp provided by the present invention is described in detail above.To the general of this fieldFor technical staff, to any obvious change that it is done under the premise of without departing substantially from true spirit, all willThe infringement weighed to the invention patent is constituted, corresponding legal liabilities will be undertaken.

Claims (10)

1. a kind of disposable degradable hemostatic clamp, it is characterised in that including two degradable intermediate plates, drawing bracket, the neck of hook and can dropCasing is solved, two degradable intermediate plates are separately positioned on two front end portions of the drawing bracket；The bottom of the drawing bracketThe front end clasp joint in portion and the neck of hook；The drawing bracket and the neck of hook are assembled in the degradable casing.

2. disposable degradable hemostatic clamp as described in claim 1, it is characterised in that:

The material of the degradable intermediate plate and the degradable casing is PLLA, and the molecular weight of used PLLA material is greater than 22Ten thousand.

3. disposable degradable hemostatic clamp as described in claim 1, it is characterised in that:

Two degradable intermediate plates are separately provided for accommodating the length of the front end portion of drawing bracket for the side of clampingSlot；It is provided in the elongated slot and the degradable integrally formed connecting column of intermediate plate；Set up separately the front end of the drawing bracketIt is equipped with corresponding connecting hole.

4. disposable degradable hemostatic clamp as claimed in claim 3, it is characterised in that:

The depth of the elongated slot is equal with the drawing thickness of bracket.

5. disposable degradable hemostatic clamp as claimed in claim 3, it is characterised in that:

The drawing bracket has symmetrical two parts, pulls the bottom bend of bracket into connecting hook；Left side brackets and the right sideSide stand is bent camber from the bottom of drawing bracket respectively outward, is then return to after middle part intersects and continues to extend upwards,Form the front end portion for being embedded in elongated slot.

6. disposable degradable hemostatic clamp as claimed in claim 5, it is characterised in that:

The left side brackets and the right side bracket are also respectively formed with during extending after middle part intersects to front end portionThe side wall in the outside of one section of outwardly projecting arc, the outermost of the arc and the degradable intermediate plate has contour put downFace.

7. disposable degradable hemostatic clamp as described in claim 1, it is characterised in that:

Limiting slot is provided on the inner wall of the degradable casing；The degradable intermediate plate is close to the outside of the degradable casingThe positive stop strip of protrusion is provided on side wall.

8. disposable degradable hemostatic clamp as described in claim 1, it is characterised in that further include circlip and the second casing；It is describedCirclip has multiple connection pawls, and each connection pawl, which sequentially passes through, to be correspondingly arranged on second casing and the degradable casingAperture, by the degradable casing together with second casing connection.

9. disposable degradable hemostatic clamp as claimed in claim 8, it is characterised in that: the neck of hook passes through in the circlipThe connection of heart Kong Houyu control line.

10. disposable degradable hemostatic clamp as claimed in claim 8, it is characterised in that: the rear end of second casing and bulletOne end of reed pipe is fixed.