CN201949491U

CN201949491U - Dilator

Info

Publication number: CN201949491U
Application number: CN 201020664448
Authority: CN
Inventors: 陈望东; 孙克展; 周婧
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd
Priority date: 2010-12-16
Filing date: 2010-12-16
Publication date: 2011-08-31
Anticipated expiration: 2020-12-16

Abstract

The utility model discloses a dilator, which comprises a hollow truncated cone-shaped guiding disc and at least two expansion sheets. The expansion sheet comprises a body and an outer expansion wide edge connected with the near end of the body. The body of the expansion sheet adopts a circular arc-shaped outer circumferential surface structure. The bottom of the wide edge is radially and slidebaly connected with the outer surface of the guiding disc via a coupling mechanism. The axis of the body of the expansion sheet is parallel to the axis of the guiding disc, so that the dilator can be selectively at a retracted state or at an expanded state. By utilizing the dilator, the patient's anus can be expanded gradually in a controllable manner, thereby avoiding the anal fissure and relieving the pain of patients. Meanwhile, the integrated operation of the pre-amplification of the anus and the anal dilatation is realized by the dilator, thus is simple and convenient in usage. The dilator can be widely used in surgery operations.

Description

Dilator

Technical field

This utility model relates to the dilator that a kind of surgical operation is used, and belongs to technical field of medical instruments.

Background technology

When anorectal surgical is done inspection, diagnosis or operative treatment, need earlier anus to be strutted, and then put into other and be used to the surgical instruments checking or treat.The surgical instruments that struts anus commonly used at present is the dilator seat, the body and the application of force broadside that is positioned at the body afterbody that comprise a cylinder type, its inflexible cylinder type body can strut anus, and the intravital hollow space of cylinder then constitutes other surgical instrumenties and enters the intravital passage of patient.During use, the body of dilator seat is slowly inserted anus until anal canal by its front end, because the diameter of the cylinder type body of dilator seat bigger (generally reaching more than 30 millimeter) usually, so the dilator seat is not easy to enter anus.Existing common way is that the doctor can insert patient's anus with finger earlier, and two handss firmly outwards strut then, again the dilator seat are inserted anus.Because when the doctor used finger pre-expansion anus, the anal sphincter damage patient caused anal fissure because moment exerts oneself excessive through regular meeting, makes patient be subjected to unnecessary injury.

The utility model content

Defective in view of above-mentioned prior art exists can progressively expand the dilator that anus can be avoided anal fissure thereby the purpose of this utility model is that proposition is a kind of.

The purpose of this utility model will be achieved by the following technical programs:

A kind of dilator, be used for the expansion of anus and anal canal, boot disk and at least two expanding plates of comprising the truncated cone-shaped of hollow, described expanding plate comprises the body of circular arc outer peripheral face structure and the broadside that extends out, described broadside is connected in the near-end of described body, and the bottom of described broadside radially slides the outer surface that is connected in described boot disk by a bindiny mechanism, and the axis of described expanding plate body is parallel to the axis of described boot disk, thereby make described dilator optionally be in two states

A) contraction state: described body is gathered the far-end in described boot disk, forms the column construction of hollow;

B) expansion state: described body is scattered in the near-end of described boot disk, and the cylindrical diameter that outline enclosed of the cylindrical diameter that outline enclosed of body of this moment body during greater than contraction state.

Further, described expanding plate is arranged at the outer surface of described boot disk symmetrically.

Further, described bindiny mechanism comprises that the guide pad of the T type that radially is arranged at described broadside bottom reaches the chute of the T type that radially is arranged at the outer surface of described boot disk and matches with described guide pad; Described guide pad is slidingly connected in the described chute, and the length of described guide pad is less than the length of described chute.

Further, the far-end of described chute is provided with one and is used to limit the step that described guide pad slides.

Further, described expanding plate comprises at least one group first expanding plate and at least one group second expanding plate, and described first expanding plate and second expanding plate are interspersed; Described first expanding plate comprises first body, first broadside and first guide pad; Described second expanding plate comprises second body, second broadside and second guide pad; Be provided with first chute, second chute that match with described first guide pad, second guide pad on the described boot disk respectively symmetrically, and the length of described first chute is less than the length of described second chute, thereby make described dilator optionally be in two states

A) contraction state: described first body, second body are all gathered the far-end in described boot disk, described first body forms first column construction of hollow, described second body forms second column construction of hollow, and described second column construction is positioned at the inside of described first column construction;

B) expansion state: described first body, second body all are distributed in the near-end of described boot disk, and described first body, second body form the column construction of hollow jointly.

Further, comprise first expanding plate of three symmetrical distributions and second expanding plate of three symmetrical distributions, and described first expanding plate and second expanding plate are interspersed.

Further, the width of described first body is greater than the width of described second body, and described first body is provided with being used to undergo surgery and observing or the window of operative treatment of square type or ladder type.

Compared with prior art, the beneficial effects of the utility model are mainly reflected in: can be so that patient's anus and anal canal little by little, controllably increase, make anal sphincter adapt to the amplitude that the dilator body is strutted gradually, thereby can avoid the generation of anal fissure phenomenon, alleviate patient's misery; Simultaneously, this utility model is with the pre-expansion anus and expand the anus integrated design, makes that the use of product is simple more, convenient.

Description of drawings

Fig. 1 is the axonometric chart of this utility model dilator when being in contraction state;

Fig. 2 is the front view of the dilator among Fig. 1;

Fig. 3 is the axonometric chart of this utility model dilator when being in expansion state;

Fig. 4 is the front view of the dilator among Fig. 3;

Fig. 5 is the explosive view of this utility model dilator;

Fig. 6 is the front view of the dilator among Fig. 5;

Fig. 7 is the axonometric chart of the dilator among Fig. 5.

Among the figure:

1 first expanding plate, 11 first bodies, 12 first broadsides

13 windows, 14 first guide pads, 2 second expanding plates

21 second bodies, 22 second broadsides, 23 second guide pads

3 boot disk, 31 first chutes, 32 second chutes

The specific embodiment

This utility model has disclosed a kind of dilator, comprising: the boot disk of the truncated cone-shaped of hollow 3, first expanding plate 1 of three symmetrical distributions and second expanding plate 2 of three symmetrical distributions; First expanding plate 1 comprises first body 11 of circular arc outer peripheral face structure and first broadside 12 that extends out, first broadside 12 is connected in the near-end of first body 11, and the bottom of first broadside 11 radially is provided with first guide pad 14 of a T type, the outer surface of boot disk 3 radially is provided with first chute 31 of the T type that uses of matching with first guide pad 14, the length of first guide pad 14 is less than the length of first chute 31, first guide pad 14 is connected in first chute 31, and can slide in first chute 31, and the axis of first body 11 is parallel to the axis of boot disk 3; Second expanding plate 2 comprises second body 21 of circular arc outer peripheral face structure and second broadside 22 that extends out, second broadside 22 is connected in the near-end of second body 21, and the bottom of second broadside 22 radially is provided with second guide pad 23 of a T type, the outer surface of boot disk 3 radially is provided with second chute 32 of the T type that uses of matching with second guide pad 23, the length of second guide pad 23 is less than the length of second chute 32, second guide pad 23 is connected in second chute 32, and can slide in second chute 32, and the axis of second body 21 is parallel to the axis of boot disk 3; First expanding plate 1 and second expanding plate 2 are interspersed, and therefore, corresponding first chute 31 and second chute 32 that is provided with also is interspersed on the boot disk 3.

The far-end of first chute 31 and second chute 32 is respectively equipped with first step (not shown) and second step (not shown), described first step and second step can limit moving radially of first expanding plate 1 and second expanding plate 2 respectively, prevent that first expanding plate 1 and second expanding plate 2 and boot disk 3 are separated.

The length of first chute 31 is less than the length of second chute 32, and the radian of first body 11 is greater than the radian of second body 21, thereby makes the dilator in the present embodiment optionally be in two states,

A) contraction state shown in Fig. 1-2: first expanding plate 1 and second expanding plate 2 are gathered respectively in the far-end of first chute 31 and second chute 32, promptly all be positioned at the far-end of boot disk 3, first body 11 is gathered first column construction that forms hollow, second body 21 is gathered second column construction that forms hollow, because the length of first chute 31 is less than the length of second chute 32, therefore, described second column construction is positioned at the inside of described first column construction, and the external diameter of promptly described second column construction is less than the internal diameter of described first column construction;

B) expansion state as shown in Figure 3-4: first expanding plate 1 and second expanding plate 2 are scattered in the near-end of first chute 31 and second chute 32 respectively, promptly all be positioned at the near-end of boot disk 3, first expanding plate 1 and second expanding plate, the 2 common column constructions that form hollow, and the internal diameter of this column construction is greater than the external diameter of first column construction under the described contraction state and second column construction.

In the present embodiment, first body 11 is provided with being used to undergo surgery and observing or the window 13 of operative treatment of square type or ladder type.

Simply introduce the use of present embodiment below:

At first, first expanding plate 1 and second expanding plate 2 are arranged at the far-end of first chute 31 and second chute 32 respectively, make described dilator be in the contraction state shown in Fig. 1-2, this moment described dilator the external diameter minimum of far-end; Then, grasp the near-end of described dilator, its far-end is inserted in the patient's anus, the near-end that extends out until described expansion dilator touches the edge of anus; At last, push boot disk 3 lentamente with the centre of the palm, make boot disk 3 axially inwardly slide with respect to first expanding plate 1 and second expanding plate 2, this moment, first expanding plate 1 and second expanding plate 2 radially outward slided with respect to boot disk 3, finally be in expansion state as shown in Figure 3-4, thereby play the effect of expanding anus, in order to make the expansion anus more controlled, chute can be designed to the ratchet-shaped chute, make the each slip of guide pad can select to be parked in any one ratchet place.

After anal sphincter was expanded to suitable size, hollow space insertion sight glass or surgery sewing and cutting machine in boot disk 3 underwent surgery and observe or operative treatment.For example hemorrhoid operation can be drawn in the blood stasis tissue column construction inside to described hollow from window 13, uses the PPH coinciding machine to carry out the seaming and cutting operation then.

Certainly, also second expanding plate 2 and window 13 can be set, at this moment, there is this bigger gap (not shown) in first expanding plate 1 each other when being in expansion state, and described gap can fill up the effect of window 13.

Near-end herein, far-end are to decide according to industry practice, are near-end from the nearly person of doctor when promptly performing the operation, and are far-end on the contrary.

This utility model still has numerous embodiments, and all technical schemes that all employing equivalents or equivalent transformation and type become all drop within the protection domain of the present utility model.

Claims

1. expander; Be used for the tubular tissue expansion; It is characterized in that: boot disk and at least two expanding plates of comprising the truncated cone-shaped of hollow; Described expanding plate comprises the body of circular arc outer peripheral face structure and the broadside that extends out; Described broadside is connected in the near-end of described body; And the bottom of described broadside can be connected in the outer surface of described boot disk with relatively radially sliding by a bindiny mechanism; The axis of described expanding plate body is parallel to the axis of described boot disk; Thereby so that described expander optionally is in two states

2. dilator according to claim 1 is characterized in that: described expanding plate is arranged at the outer surface of described boot disk symmetrically.

3. dilator according to claim 2 is characterized in that: described bindiny mechanism comprises that the guide pad of the T type that radially is arranged at described broadside bottom reaches the chute of the T type that radially is arranged at the outer surface of described boot disk and matches with described guide pad; Described guide pad is slidingly connected in the described chute, and the length of described guide pad is less than the length of described chute.

4. dilator according to claim 3 is characterized in that: the far-end of described chute is provided with one and is used to limit the step that described guide pad slides.

5. dilator according to claim 4 is characterized in that: described expanding plate comprises one group of first expanding plate and one group of second expanding plate, and described first expanding plate and second expanding plate are interspersed; Described first expanding plate comprises first body, first broadside and first guide pad; Described second expanding plate comprises second body, second broadside and second guide pad; Be provided with first chute, second chute that match with described first guide pad, second guide pad on the described boot disk respectively symmetrically, and the length of described first chute is less than the length of described second chute, thereby make described dilator optionally be in two states

6. dilator according to claim 5 is characterized in that: comprise first expanding plate of three symmetrical distributions and second expanding plate of three symmetrical distributions, and described first expanding plate and second expanding plate are interspersed.

7. dilator according to claim 6 is characterized in that: the width of described first body is greater than the width of described second body, and described first body is provided with being used to undergo surgery and observing or the window of operative treatment of square type or ladder type.