CN206365916U

CN206365916U - Three-pawl type stone dislodger

Info

Publication number: CN206365916U
Application number: CN201621071206.4U
Authority: CN
Inventors: 孙静姝
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-09-22
Filing date: 2016-09-22
Publication date: 2017-08-01
Anticipated expiration: 2026-09-22

Abstract

The utility model is related to a kind of medicine equipment for taking out calculus in human body, specifically a kind of three-pawl type stone dislodger.Including outer tube, the control stick being inserted into outer tube, what the lower end and manipulated bar for being arranged on outer tube were controlled takes stone pawl, stone pawl is taken to be made up of the claw hook of three annular arrays, the lower end of outer tube is installed with the sliding sleeve of column structure, on the sliding sleeve three sliding sleeving holes being obliquely installed through sliding sleeve body are uniformly distributed around axis, three claw hooks are slided respectively to be inserted into three sliding sleeving holes, and the inner of claw hook is fixedly connected on the lower end of control stick.The stone dislodger is applicable to a variety of different size of calculus, and its simple in construction, easy to use, stability is good, takes stone one-time success rate high, advantageously reduces surgical error.

Description

Three-pawl type stone dislodger

Technical field

The utility model is related to a kind of medicine equipment for taking out calculus in human body, and specifically a kind of three-pawl type takes stone Device.

Background technology

It can use Minimally Invasive Surgery will be internal for kidney stone, the urethral calculus that can not be excreted using drug therapy Calculus is taken out, and this minimally invasive stone dislodger for taking stone operation to use has two kinds：Lithotomy forceps and stone basket.Both differences are that the former adopts Clamp calculus with binding clip and basket that the latter is constituted using many one metal wires extracts calculus, both common ground be its operating portion all Be use be arranged on flexible pipe in can pull flexible shaft operation binding clip or basket action.Due to the small volume of binding clip or basket, The scope and amplitude of motion are smaller, and direct pull flexible shaft operation is difficult to be accurately positioned, and excessive easily cause of movement range takes stone to lose Miss, or even accidentally injure tissue.Chinese patent 2009203062998 discloses one kind《Claw-shaped stone extractor》, using scissors shank type Operation handle, using the lever construction pull flexible axle being hinged, its movement range is adapted to artificial operation.But due to three hooks Between there is no a positioner, in actual use, thinner hook is easy to mutually winding, hook and connected, it is impossible to play crawl calculus Effect；In addition, when hook stretches out from sleeve pipe, its movement locus is unfavorable for hook front end parallel to the axis of sleeve pipe Expansion, three hooks are projected in parallel out, and its bore does not change substantially, weak to the Grasping skill of bulky grain calculus, in contraction process Calculus easily comes off.

The content of the invention

The purpose of this utility model is to provide that a kind of simple in construction, easy to use, applied widely, success rate is high, reduce The three-pawl type stone dislodger of error.

The utility model is to solve the technical scheme that is used of technical problem：

Three-pawl type stone dislodger described in the utility model includes outer tube, the control stick being inserted into outer tube, sets outside The lower end of sleeve pipe and the control of manipulated bar take stone pawl, described to take stone pawl to be made up of the claw hook of three annular arrays, described outer The lower end of sleeve pipe is installed with the sliding sleeve of column structure, the sliding sleeve is uniformly distributed three through sliding sleeve body around axis Sliding sleeving hole, three sliding sleeving hole openings in sliding sleeve upper end are evenly distributed on the inner face of sliding sleeve, three in sliding sleeve lower end Sliding sleeving hole opening is evenly distributed on the outer face of sliding sleeve, opening on sliding sleeve inner face and between the axis of sliding sleeve away from From less than the distance between opening and the axis of sliding sleeve on sliding sleeve outer face；Three claw hooks are slided respectively is inserted into three sliding sleeves Kong Zhong, the inner of claw hook is fixedly connected on the lower end of control stick.

The lower end of the claw hook is provided with the hook for accommodating coupler body in the lower surface of sliding sleeve with the coupler body for pointing to sliding sleeve axis Body groove, the coupler body groove points to the axle center of sliding sleeve at sliding sleeving hole opening.

It is simultaneously sliding after adopting the above technical scheme, the stone dislodger separates three claw hooks using sliding sleeve, it is to avoid it mutually winds Set can guide the oblique outside of claw hook to stretch out, and expand the bore at place of dehiscing, be applicable to a variety of different size of calculus, its structure Simply, easy to use, stability is good, takes stone one-time success rate high, advantageously reduces surgical error.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Fig. 2 is the overlooking the structure diagram of sliding sleeve and claw hook.

Fig. 3 is the present invention looks up structural representation of sliding sleeve and claw hook.

Fig. 4 is Fig. 1 A-A sectional views.

Fig. 5 is Fig. 1 B-B sectional views.

Embodiment

As shown in figure 1, three-pawl type stone dislodger described in the utility model includes outer tube 1, the manipulation being inserted into outer tube 1 Bar 2, what the lower end and manipulated bar 2 for being arranged on outer tube 1 were controlled takes stone pawl, outer tube 1 and control stick 2 using silica gel, The flexible materials such as plastics are made, flexible and have certain elasticity, take stone pawl to stretch opening and closing, capture when pull control stick 2 And calculus is caught, then taken out with outer tube 1.

As shown in Figure 2 and Figure 3, described to take stone pawl to be made up of the claw hook 3 of three annular arrays, the claw hook 3 uses elastic metallic Silk is made, with preferable elasticity and shape memory.The lower end of the outer tube 1 is installed with the sliding sleeve of column structure Three sliding sleeving hole 3B for running through sliding sleeve body are uniformly distributed around axis on 3A, the sliding sleeve 3A, sliding sleeving hole 3B can be straight Hole or arcuate socket, it is to accommodate and guide claw hook 3 to slide wherein that it, which is acted on,；Three sliding sleeving holes in sliding sleeve 3A upper ends Opening is evenly distributed on sliding sleeve 3A inner face, and three sliding sleeving hole openings in sliding sleeve 3A lower ends are evenly distributed on sliding sleeve 3A's On outer face, the distance between axis of opening and sliding sleeve 3A on sliding sleeve 3A inner faces is less than on sliding sleeve 3A outer faces The distance between opening and sliding sleeve 3A axis, so, three sliding sleeving hole 3B are in small outer big radial arrangement；Three claw hooks 3 Slide and be inserted into three sliding sleeving hole 3B respectively, the inner of claw hook 3 is fixedly connected on the lower end of control stick 2.Pull control stick 2 When, three claw hooks 3 are slided in three sliding sleeving hole 3B simultaneously, when sliding in and out, and dehiscing between three claw hooks 3 is expanded Greatly, to contract when, dehiscing between three claw hooks 3 is reduced.The calculus of variable grain size so can be both captured, Be conducive to the stability of crawl, it is to avoid the calculus hooked comes off.

In addition, the lower end of the claw hook 3 is provided with the coupler body 9 for pointing to sliding sleeve 3A axis in sliding sleeve 3A lower surface Coupler body the groove 3C, the coupler body groove 3C for accommodating coupler body 9 point to sliding sleeve 3A axle center at sliding sleeving hole opening.After claw hook 3 bounces back, In the income coupler body groove of coupler body 9 3C, spacing effect is on the one hand played, while the point of coupler body 9 can also be avoided in catheterization procedure End scratches, punctures tissue.

As shown in Figure 1, Figure 4, Figure 5, the upper end of the outer tube 1 is provided with the stepping pusher for promoting control stick 2 to act, The stepping pusher includes being fixedly connected on the handle of the upper end of outer tube 1, the handwheel 5 on handle and screwed pipe 6, institute It is by the train wheel bridge 41 be arrangeding in parallel, lower plate 42 and the side for being fixedly connected on train wheel bridge 41 and the two ends of lower plate 42 to state handle The connecting tube 7 for accommodating the end of outer tube 1 is fixedly installed on the frame structure that plate 43 is constituted, the lower surface of the lower plate 42, Be provided through hole on train wheel bridge 41 and lower plate 42, the through hole be coaxially disposed with connecting tube 7 and through hole diameter Less than the internal diameter of connecting tube 7, the projection 8 of oriented axis direction extension is set, the projection 8 has two on the inwall of the through hole Block, axle center is symmetricly set on the inwall of through hole.The screwed pipe 6 is slidably mounted in through hole, on the outer wall of screwed pipe 6 With axially arranged and match the groove of projection 8, projection 8 is located in the groove of screwed pipe 6, is provided with the outer wall of screwed pipe 6 External screw thread, the internal diameter of through hole is more than the external diameter of screwed pipe 6, while the gap between the top of two projection 8 is less than the outer of screwed pipe 6 Footpath but the internal diameter for being more than screwed pipe 6, make projection 8 to be stuck in just in the groove of screwed pipe 6 and be unlikely to used and wear screwed pipe 6 Tube wall.

As shown in Figure 2 and Figure 3, by handwheel 5 of the thread set on screwed pipe 6 be located at train wheel bridge 41 and lower plate 42 it Between space in, internal thread is provided with handwheel 5, the upper end of control stick 2 inserts and is fixedly connected in the inner chamber of screwed pipe 6. In use, rotating handwheel 5, it is set to be moved axially on screwed pipe 6, the upper and lower due to handwheel 5 is to having train wheel bridge 41 and lower folder Plate 42 stops that screwed pipe 6 is slided up and down relative to train wheel bridge 41 and lower plate 42 when handwheel 5 is rotated, and drives the phase of control stick 2 Outer tube 1 is moved axially.Screwed pipe 6 is set axially to be moved when slip because projection 8 is stuck in the groove of screwed pipe 6 Move and can not rotate.

In addition, for convenience of handwheel 5 is rotated, the external diameter of handwheel 5 can be made to be more than the width of train wheel bridge 41 and lower plate 42, hand The a part of of wheel 5 can be exposed, convenient operation.The axle center of handwheel 5 can also be arranged on train wheel bridge 41 and lower plate 42 Eccentric position on, a part of of handwheel 5 is exposed, convenient operation.

As shown in figure 1, trip bolt is provided with the side wall of connecting tube 7, for the upper end of outer tube 1 to be connected into connection On pipe 7.Alignment pin 61 is fitted with the groove of screwed pipe 6, this 61 run through control stick 2 upper end, control stick 2 is fixedly connected In the inner chamber of screwed pipe 6.

Claims

1. three-pawl type stone dislodger, including outer tube（1）, be inserted into outer tube（1）In control stick（2）, it is arranged on outer tube（1） Lower end and manipulated bar（2）What is controlled takes stone pawl, it is characterised in that：The claw hook that stone pawl is taken by three annular arrays （3）Constitute, the outer tube（1）Lower end be installed with the sliding sleeve of column structure（3A）, the sliding sleeve（3A）It is upper to surround axle Line is uniformly distributed three sliding sleeving holes for running through sliding sleeve body（3B）, in sliding sleeve（3A）Three sliding sleeving hole openings of upper end are uniformly distributed In sliding sleeve（3A）Inner face on, in sliding sleeve（3A）Three sliding sleeving hole openings of lower end are evenly distributed on sliding sleeve（3A）Outer face On, positioned at sliding sleeve（3A）Opening and sliding sleeve on inner face（3A）The distance between axis be less than sliding sleeve（3A）On outer face Opening and sliding sleeve（3A）The distance between axis；Three claw hooks（3）Slide respectively and be inserted into three sliding sleeving holes（3B）In, claw hook （3）The inner be fixedly connected on control stick（2）Lower end.

2. three-pawl type stone dislodger according to claim 1, it is characterised in that：The claw hook（3）Lower end with point to slide Set（3A）The coupler body of axis（9）, in sliding sleeve（3A）Lower surface be provided with receiving coupler body（9）Coupler body groove（3C）, the coupler body Groove（3C）Sliding sleeve is pointed at sliding sleeving hole opening（3A）Axle center.