CN208756059U - A kind of self-locking portal blood blocker - Google Patents

Abstract

The utility model discloses a kind of self-locking portal blood blockers, including wrap, bracket, supporting element, tight lock part, and wherein wrap is flexible thread, tube, bar or ribbon；Supporting element is provided with first through hole, passes through suitable for wrap；Tight lock part includes spring, detent seat and detent button, and has the second through-hole of adjustable size；Detent seat and detent button can be relatively movable, and limit stroke by position-limit mechanism, so the size of the second through-hole is limited by the relative position of detent seat and detent button, and the full-size of the second through-hole is passed through suitable for wrap；The both ends of spring bear against detent seat and detent button, so as to which detent seat and detent button are maintained at the restraining position as defined by position-limit mechanism by spring force；Detent seat and the supporting element are separately fixed on bracket.Portal blood blocker provided by the utility model has the characteristics that dynamics is adjustable, device is easy to operate and barrier effect is outstanding.

Description

A kind of self-locking portal blood blocker

Technical field

The utility model relates to a kind of portal blood blockers more particularly to a kind of device, and simple, vascular pressure is adjusted Laparoscope portal blood blocker.

Background technique

It is high that the extensive hepatectomy under the especially complete laparoscope of hepatectomy under laparoscope is still considered as difficulty Risks Operation, have the certain death rate and complication rate.The main reason for this phenomenon occur is because of the surface of a wound during hepatectomy Bleeding is difficult to control.In-degree sequence is the main method of control surface of a wound bleeding during hepatectomy, laparoscopic liver resection In as use full pringle maneuver, surface of a wound bleeding in art can be reduced, but can cause remaining Ischemia-reperfusion Injury in Rat, gastrointestinal tract become silted up The adverse reactions such as blood bring new wound to body while reducing amount of bleeding, run counter to the minimally invasive ancestor of laparoscopic surgery Purport.

Hepatic portal is the important channel of liver, and hepatic blood supply is abundant, and portal vein and proper hepatic artery blood are through this inflow liver. Proper hepatic artery, main portal vein, choledochus, lymph node, lymphatic vessel and liver neuropile are wrapped in ligamentum hepatoduodenale In (hepatic pedicle).Before, the blocking of porta hepatis generallys use Pringle method, i.e., wraps liver 12 with catheter, silicone tube etc. and refer to Intestines ligament one is fixed with haemostatic clamp clamp and has the function that vascular inflow occlusion blood flow to tensing after two weeks, but when clamp is fixed Hepatic pedicle pressure is uneven, be easy to cause the damage of endangium, furthermore need to open primary, interruption 5 minutes for every 10-15 minutes After can block repeatedly, to complete disconnected liver process.Tie up operation in addition to not to hepatic portal position using catheter or silicone tube Except convenient, the dynamics tied up also is difficult to control, and too tight or too loose to can lead to barrier effect poor.In addition, in the prior art There is also device complexity, cumbersome defect for portal blood blocker.

Therefore, those skilled in the art is dedicated to developing one kind to tie up dynamics adjustable, device, it is easy to operate and The outstanding portal blood blocker of barrier effect.

Utility model content

In view of the above drawbacks of the prior art, the utility model provides a kind of portal blood blocker, including wrapping Part, bracket, supporting element, tight lock part.

For vascular inflow occlusion blood flow, tensed after generalling use wrap winding ligamentum hepatoduodenale, used wrapping Part is flexible thread, tube, bar or ribbon, different drawing when in order to guarantee that wrap can bear to tense Power, the intensity and toughness which also needs to have certain.Wrap after tension is exceptionally straight, and tightness can be adjusted manually Section after we need to only use tight lock part to lock the other end, and struts both ends using supporting element, can be by along wrap It tries hard to keep and handles, realize the adjustable function of tying up dynamics.In order to guarantee that wrap can pass through supporting element, it is provided on supporting element First through hole；The tight lock part that we use includes spring, detent seat and detent button, and second with adjustable size is logical Hole can penetrate wrap when the second through-hole is big due to adjustable section, the second through-hole be turned down until lockking Wrap move it can not, we adjust the second hole size, therefore detent seat by the cooperation of detent seat and detent button Can be relatively movable with detent button, the size of the second through-hole is limited by the relative position of the detent seat and the detent button Fixed, due to needing to penetrate wrap when through-hole tunes up, the full-size of through-hole must be suited to wrap and pass through；Through-hole is big Small can be zero.In addition, we limit relatively movable stroke by position-limit mechanism, position-limit mechanism realization is given in embodiment A kind of method；The both ends of spring bear against detent seat and detent button, so as to pass through spring force for detent seat and detent Button is maintained at the restraining position as defined by the position-limit mechanism, and detent seat and supporting element are fixed on the bracket.

Further, the detent button and the detent seat may include limit chuck and limit hole respectively, thus shape At the position limiting structure.

Further, the lead-in groove matched with the limit chuck is additionally provided on the detent seat, for assembling When the limit chuck is oriented to the limit hole.Such case only when detent seat and detent button are detachable, is convenient for card The installation of position button.

Further, the limiting slot matched with the limit chuck is provided on the outside of the limit hole, position is applicable in The limit chuck enters the limiting slot.

Further, the detent button is provided with positioning round table against the position of the spring, for limiting the bullet The position of spring, positioning round table is caught in spring, is slided after can preventing spring stress along detent button bottom surface.

Further, the wrap is made of metal, rubber, latex, silica gel, plastics or combinations thereof.

Further, the wrap is long 30-60cm, the threadiness of outer diameter 1-2mm or tube.

Preferably, the wrap uses the structure of copper wire outer cladding plastic layer.

Further, the first through hole diameter is 3-6mm.

Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation It is bright, to be fully understood from the purpose of this utility model, feature and effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of a preferred embodiment of the utility model.

Fig. 2 is the operation principle schematic diagram of tight lock part in a preferred embodiment of the utility model.

Fig. 3 is that stable state when tight lock part does not penetrate wrap in a preferred embodiment of the utility model is illustrated Figure.

Fig. 4 is the detent button extremely limit chuck of tight lock part in a preferred embodiment of the utility model completely into limit The structural schematic diagram of position slot.

Fig. 5 is stable state schematic diagram when tight lock part penetrates wrap in a preferred embodiment of the utility model.

Drawing reference numeral: 101 wrap, 102 detent buttons, 103 detent seats, 104 brackets, 105 supporting elements, 106 springs, 107 slots, 108 limit chuck, 109 positioning round tables, 110 lead-in grooves, 111 limiting slots, 112 second through-holes.

Specific embodiment

Portal blood blocker in the present embodiment includes wrap 101, supporting element 105, bracket 104 and tight lock part, lock Tight portion includes detent button 102, detent seat 103 and the spring 106 being placed in detent seat inside groove.

As shown in Figure 1, we pass through the stuck wrap 101 of combination of detent button 102 and detent seat 103, and use branch Support member 105 supports wrap 101 and its both ends, so that the tension in wrap 101 is maintained.Wrap 101 passes through copper wire Outer package plastic layer is made, and has the characteristics that excellent tensile resistance and bent.It is used in copper wire diameter the present embodiment 1mm, the outer diameter of rubber tube use 1.5mm, and wrap overall length is usually 30-60cm, use 50cm in the present embodiment.Supporting element 105 usual long 10-25cm use the transparent plastic hard tube of 15cm in the present embodiment, and outer diameter 5mm, internal diameter is first through hole Diameter 4mm, suitable for wrap 101 fold it is primary after also cross.Certain hardness is for guaranteeing that it can bear wrap 101 Pulling force and play supporting role to wrap 101 and ligament or vascular site.Supporting element 105 and detent seat 103 with branch Frame is fixedly connected.

Fig. 2 furthermore presents the structure feature of tight lock part.Detent button 102 and detent seat 103 are uses of working in coordination , it is provided with slot 107 on detent seat 103, is conveniently put into spring 106 and detent seat 103.We are in detent button 102 and detent Round tube hole is respectively provided on seat 103, and the relative position by changing detent button 102 and detent seat 103 adjusts round tube hole Overlapping cases, the practical part being overlapped of two through hole be the second through-hole 112.When two round tube holes are completely coincident, the second through-hole 112 Size is maximum, at this time, it may be necessary to wrap 101 be passed through to fix, therefore the full-size of the second through-hole 112 is suitable for Wrap 101 passes through.In addition, detent button 102 and spring 106 skid off the slot 107 of detent seat in order to prevent, position restrainer is needed Structure limits its relatively movable stroke, therefore limit chuck 108 is additionally provided on detent button 102, is located under its round tube hole Portion is the axial projections of cuboid, the installation of the detent button 102 for convenience with limit chuck 108, in detent seat 103 On be provided with matched lead-in groove 110, during installation will limit chuck 108 from the opening of slot import limit hole, herein In order to simplify device, we merge limit hole with the through-hole engaged, and a hole is dual-purpose, thus, it can be understood that, it limits herein Hole is the round tube hole on detent seat, which both plays the role of the displacement of limitation limit chuck 108, meanwhile, card can also be cooperated Round tube hole on the button of position constitutes the second through-hole 112.Limiting slot 111, shape size are additionally provided in detent seat round tube hole lower part Cooperate with limit chuck 108, the outermost outer diameter of protrusion is greater than the internal diameter of slot 107, therefore limits chuck 108 and enter detent seat Scope of activities after round tube hole is only limitted to inside round tube hole, up to round tube hole top, at limiting slot 111.106 both ends of spring Detent seat and detent button are born against, therefore, detent seat 103 and detent button 102 are maintained at limit using the elastic force of spring Determine the position of mechanism restriction, the i.e. defined position of limit chuck and limit hole cooperation restriction, that is, limits chuck and be located at detent seat Relative position when within the scope of round tube hole top to limiting slot.It is additionally provided in detent button 102 against the position of spring 106 Positioning round table 109, size is suitable for being caught in spring 106, and the movement of limited spring, to define the position of spring.

The application method of the present embodiment is introduced below in conjunction with the above schematic diagram and Fig. 3, Fig. 4, Fig. 5.

Firstly, spring is put into 103 inside groove of detent seat, limit chuck 108 is along lead-in groove 110, with finger by detent Button 102 is pressed into, and is rotated after limiting chuck 108 and reaching 110 bottom of lead-in groove to the round tube hole of its guiding, is removed Finger pressure, due to the elastic force effect of spring and the position-limiting action of limit chuck 108, the phase of detent button, spring and detent seat To position as shown in figure 3, this is stable state when not penetrating wrap 101.

After wrap to be surrounded to the position for needing blocking blood flow, it is complete to limit chuck 108 firmly to press detent button 102 Enter limiting slot 111 entirely, state is as shown in Figure 4.The aperture on detent button 102 and detent seat maximizes overlapping at this time, according to Secondary the second through-hole 112 that wrap 101 is passed through to the first through hole of supporting element and the adjustable dimension size of the overlapping.At this time by Larger in the second clear size of opening, wrap 101 is freely slidable, withstands the hepatic portal position for needing to stop blooding with 105 right end of support portion, Tight wrap 101 is slightly pulled at, adjusts the degree of exerting oneself according to the needs for the dynamics of tying up, unclamps detent button 102, benefit after the completion Being pushed up detent button 102 with spring force can be stuck by wrap 101 to the second through-hole 112, at this time the structure of tight lock part such as Fig. 5 It is shown, for the stable state for penetrating wrap 101.Using the stuck effect of the device, it is suitable in wrap 101 to have maintained Tension, and realize using uniform pressure of the wrap to duodenum ligament the blocking to hepatic portal blood flow.

The utility model can be blocked completely according to operation actual demand, realization into hepatic blood flow, adjusting hepatic pedicle pressure etc. Target, improves the safety of operation, farthest mitigates the ischemical reperfusion injury to liver, which is also applied for Other blockings with blood flow in base of a fruit organ operation (such as spleen, kidney).

The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain Available technical solution is tested, it all should be within the scope of protection determined by the claims.

Claims (8)

1. a kind of portal blood blocker, which is characterized in that including wrap, bracket, supporting element, tight lock part, wherein the packet It is flexible thread, tube, bar or ribbon around part；

The supporting element is provided with first through hole, passes through suitable for the wrap；

The tight lock part includes spring, detent seat and detent button, and has the second through-hole of adjustable size；The detent Seat and the detent button can be relatively movable, and limit stroke by position-limit mechanism, so the size of the second through-hole is by the card The relative position of position seat and the detent button is limited, and the full-size of second through-hole is suitable for the wrap and wears It crosses；The both ends of the spring bear against the detent seat and the detent button, so as to pass through spring force for the detent Seat and the detent button are maintained at the restraining position as defined by the position-limit mechanism；

The detent seat and the supporting element are separately fixed on the bracket.

2. portal blood blocker as described in claim 1, which is characterized in that the detent button and detent seat difference Including limit chuck and limit hole, to form the position-limit mechanism.

3. portal blood blocker as claimed in claim 2, which is characterized in that be additionally provided on the detent seat and the limit The lead-in groove that position chuck matches, for the limit chuck to be oriented to the limit hole in assembly.

4. portal blood blocker as claimed in claim 2, which is characterized in that be provided with and the limit on the outside of the limit hole The limiting slot that position chuck matches, position are applicable in the limit chuck into the limiting slot.

5. portal blood blocker as described in claim 1, which is characterized in that the detent button is against the position of the spring It installs and is equipped with positioning round table, for limiting the position of the spring.

6. portal blood blocker as described in claim 1, which is characterized in that the wrap by metal, rubber, latex, Silica gel, plastics or combinations thereof are made.

7. portal blood blocker as described in claim 1, which is characterized in that the wrap is long 30-60cm, outer diameter 1- The threadiness or tube of 2mm.

8. portal blood blocker as described in claim 1, which is characterized in that the first through hole diameter is 3-6mm.