CN108144178A

CN108144178A - multi-layer nested oesophageal dilator

Info

Publication number: CN108144178A
Application number: CN201611107913.9A
Authority: CN
Inventors: 闫士举
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2018-06-12
Anticipated expiration: 2036-12-06
Also published as: CN108144178B

Abstract

A kind of multi-layer nested oesophageal dilator, including mandrel, casing and at least one layer of expansion pipe being nested between mandrel and casing；Mandrel can be axially moveable in casing or radially rotate, and first layer expansion pipe can be driven to stretch out casing or retract outside casing, and first layer expansion pipe can drive second layer expansion pipe to stretch out casing or retract outside casing, and so on.Multi-layer nested oesophageal dilator of the present invention can set multilayer expansion pipe and realize and release successively, expansion pipe outside diameter be caused gradually to increase, available for gradually expanding lemostenosis position.

Description

Multi-layer nested oesophageal dilator

Technical field

The present invention relates to a kind of medical auxiliary equipment more particularly to a kind of multi-layer nested oesophageal dilators.

Background technology

Dilatation is implemented using expander for suffering from the patient of lemostenosis in Hospitals at Present.It is existing clinically to use The mostly fixed series of expanders of outer diameter.It generally requires repeatedly to replace and be inserted into various outer diameter during dilatation is implemented Expander also extends operating time while bringing pain to patient.

Invention content

The purpose of the present invention is exactly to solve the above-mentioned problems, to provide a kind of multi-layer nested oesophageal dilator.

In order to achieve the above object, the present invention is achieved through the following technical solutions：

A kind of multi-layer nested oesophageal dilator including mandrel, casing and is nested between mandrel and casing at least One layer of expansion pipe；Mandrel can be axially moveable in casing or radially rotate, and first layer expansion pipe can be driven to stretch out casing Or retract outside casing, first layer expansion pipe can drive second layer expansion pipe to stretch out casing or retract outside casing, and so on.

The mandrel includes the connected guide rod and handle of sequence, and the forepart of guide rod is equipped with mandrel radially short pin.

Described sleeve pipe includes for the embedding pipeline section of embedded expansion pipe and the glissile segment for being slided along mandrel, and described at least one Layer expansion pipe is nested between mandrel and the embedding pipeline section of casing.

Each layer expansion pipe is separated from each other, and every layer of expansion Guan Jun is connected to the embedding pipe of casing by the stamp hole interface of its tail end Section tail end, each layer expansion pipe are equipped with L-shaped sliding slot on tube wall, and in addition to outermost layer expansion pipe, remaining each layer expansion pipe is also outside Wall is equipped with expansion and manages short pin；Radially short pin is inserted into the L-shaped sliding slot of first layer expansion pipe and can be expanded along first layer mandrel The axial component of the L-shaped sliding slot of pipe slides, and realizes the stretching or retraction of mandrel；Or be transferred to the L-shaped sliding slot of first layer expansion pipe Circumferential portion, realizes to be pushed forward by mandrel first layer expansion pipe is driven to break stamp hole interface and stretch out；First layer expands the expansion of pipe Open the axial component cunning that the short pin of pipe was inserted into the L-shaped sliding slot of second layer expansion pipe and can be expanded along the second layer L-shaped sliding slot of pipe It is dynamic, realize mandrel stretching synchronous with first layer expansion pipe or retraction；Or it is transferred to the circumferential portion of the L-shaped sliding slot of second layer expansion pipe Point, realize that mandrel and first layer expansion pipe are pushed forward second layer expansion pipe is driven to break stamp hole interface and stretch out together；With such It pushes away.

Multi-layer nested oesophageal dilator of the present invention can set multilayer expansion pipe and realize and release successively, cause to expand pipe outside diameter Gradually increase, available for gradually expanding lemostenosis position.

Description of the drawings

Fig. 1, Fig. 2, Fig. 3 are the overall structure diagrams of multi-layer nested oesophageal dilator of the present invention；

Fig. 4 is the structure diagram of the mandrel in the present invention；

Fig. 5 is the partial structural diagram of the present invention；

Fig. 6 is the structure diagram of the first layer expansion pipe in the present invention.

Specific embodiment

The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 2, coordinate referring to Fig. 3, Fig. 4, Fig. 5, multi-layer nested oesophageal dilator of the invention, including mandrel 1st, casing 2 and at least one layer of expansion pipe 3 being nested between mandrel and casing；Mandrel can be axially moveable in casing or It radially rotates, and first layer expansion pipe can be driven to stretch out casing or retract outside casing, first layer expansion pipe can drive second Layer expansion pipe stretches out casing or retracts outside casing, and so on.

Mandrel 1 therein includes the connected guide rod 11 of sequence and handle 12, and the forepart of guide rod is radially short equipped with mandrel Pin 13.

Casing 2 therein includes the embedding pipeline section 21 for being embedded in expansion pipe and the glissile segment 22 for being slided along mandrel, institute At least one layer of expansion pipe is stated to be nested between mandrel and the embedding pipeline section of casing.

Cooperation is separated from each other referring to Fig. 6, each layer expansion pipe, and every layer of expansion pipe 3 passes through the stamp hole interface 31 of its tail end The embedding pipeline section tail end of casing is connected to, each layer expansion pipe is equipped with L-shaped sliding slot 32 on tube wall, in addition to outermost layer expansion pipe, Remaining each layer expansion pipe is also equipped with expansion and manages short pin 33 on the outer wall；Radially short pin is inserted into the L-shaped cunning that first layer expands pipe to mandrel It can slide in slot and along the axial component 321 of the L-shaped sliding slot of first layer expansion pipe, realize the stretching or retraction of mandrel；Or it is transferred to The circumferential portion 322 of the L-shaped sliding slot of first layer expansion pipe, realizes to be pushed forward by mandrel first layer expansion pipe is driven to break stamp hole and connect Mouth simultaneously stretches out；The expansion of first layer expansion pipe manages short pin and is inserted into the L-shaped sliding slot of second layer expansion pipe and can expand along the second layer The axial component for opening the L-shaped sliding slot of pipe slides, and realizes mandrel stretching synchronous with first layer expansion pipe or retracts；Or it is transferred to the second layer The circumferential portion of the L-shaped sliding slot of pipe is expanded, realizes that mandrel and first layer expansion pipe are pushed forward second layer expansion pipe is driven to break together Stamp hole interface simultaneously stretches out；And so on.

Claims

1. a kind of multi-layer nested oesophageal dilator, it is characterised in that：Including mandrel, casing and it is nested in mandrel and casing Between at least one layer of expansion pipe；Mandrel can be axially moveable in casing or radially rotate, and first layer can be driven to expand Pipe stretches out casing or retracts outside casing, and first layer expansion pipe can drive second layer expansion pipe to stretch out casing or from casing external contracting It returns, and so on.

2. multi-layer nested oesophageal dilator according to claim 1, it is characterised in that：The mandrel includes sequence and is connected Guide rod and handle, the forepart of guide rod is equipped with mandrel radially short pin.

3. multi-layer nested oesophageal dilator according to claim 1, it is characterised in that：Described sleeve pipe includes being embedded in The embedding pipeline section and glissile segment for being slided along mandrel for expanding pipe, at least one layer of expansion pipe are nested in the embedding of mandrel and casing Between pipeline section.

4. multi-layer nested oesophageal dilator according to claim 1, it is characterised in that：Each layer expansion pipe is separated from each other, Every layer of expansion Guan Jun is connected to the embedding pipeline section tail end of casing by the stamp hole interface of its tail end, and it is equal on tube wall that each layer expands pipe Equipped with L-shaped sliding slot, in addition to outermost layer expansion pipe, remaining each layer expansion pipe is also equipped with expansion and manages short pin on the outer wall；Mandrel is radially Short pin is inserted into the axial component of L-shaped sliding slot that can expand in the L-shaped sliding slot of first layer expansion pipe and along first layer pipe and slides, real The stretching or retraction of existing mandrel；Or the circumferential portion of the L-shaped sliding slot of first layer expansion pipe is transferred to, it realizes and drive the is pushed forward by mandrel One layer of expansion pipe is broken stamp hole interface and is stretched out；The L that short pin is inserted into second layer expansion pipe is managed in the expansion of first layer expansion pipe It can slide in shape sliding slot and along the axial component of the L-shaped sliding slot of second layer expansion pipe, realize that mandrel is synchronous with first layer expansion pipe It stretches out or retracts；Or the circumferential portion of the L-shaped sliding slot of second layer expansion pipe is transferred to, before realizing mandrel and first layer expansion pipe together Pushing belt moves second layer expansion pipe and breaks stamp hole interface and stretch out；And so on.