CN211023321U

CN211023321U - Recoverable esophagus metal support adjuster

Info

Publication number: CN211023321U
Application number: CN201921974509.0U
Authority: CN
Inventors: 刘丽萍; 刘明星; 冯振; 元芳芳; 张尚飞; 冯静; 梁蓉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-17
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a recoverable esophagus metal support adjuster, which comprises a fixed seat 1 and a movable seat 9; the middle part of the fixed seat 1 is provided with a push-pull rod channel 2, the front side of the push-pull rod channel 2 is provided with an observation groove 4 along the axial direction, scales 6 for displaying the position of the hook are marked along the observation groove 4, the end part of the push-pull rod channel 2 is connected with a sleeve 7, and the end part of the sleeve 7 is provided with a metal ring opening 8; the movable seat 9 is connected with a push-pull rod 10, a marking loop line 11 is arranged at the end part of the push-pull rod 10, the end part of the push-pull rod 10 is connected with a guide wire 12, the end part of the guide wire 12 is connected with a hook seat 13, and a hook 14 is arranged on the hook seat 13; when the push-pull rod 10 is inserted into the push-pull rod channel 2 with its marking ring line 11 aligned with the 0 scale at the observation groove 4, the hook 14 is located right at the metal ring opening 8 at the end of the sleeve 7. The utility model has reasonable design, simple structure and low cost, and has good application value for the adjustment of the recoverable esophagus metal bracket.

Description

Recoverable esophagus metal support adjuster

Technical Field

The utility model relates to a digestion scope field specifically is a recoverable esophagus metal support adjuster.

Background

The upper digestive tract metal stent implantation is one of effective methods for treating esophageal stenosis, and is mainly used for clinically treating malignant esophageal stenosis, esophageal cancer, cardiac cancer, anastomotic stoma cancer, esophageal stenosis caused by metastatic cancer, esophageal tracheal fistula, benign stenosis unsuitable for expansion and operation and the like.

At present, the materials of the metal stent are stainless steel (Wallstent, Z-stent), tantalum wire (Sterckerstent), nickel-titanium alloy wire (Instent, Niti, Zilver, MT), etc. The nickel-titanium alloy wire has good biocompatibility, shape memory property and good elasticity, and is commonly used at present. The esophagus metal support has self-expansibility, is compressed between the pushing tube sheaths of the double-layer structure, has the caliber of 18mm after being completely released and expanded, effectively improves the narrow condition of the esophagus and has obvious unobstructed effect.

The esophagus metal stent is divided into a metal bare stent and a full-covered metal stent according to whether the stent is covered, the esophagus is usually a recoverable full-covered metal stent, and the surface of the metal stent is covered with a layer of silicone mold. Therefore, the metal stent needs to be moved to a proper position where the metal stent is placed before again, or the metal stent falling off into the stomach is taken out, the far end of the metal stent is provided with a recovery wire device (as shown in fig. 5), the recovery wire device is pulled by a hook to enable the recovery wire to be tightened to drive the mouth side end of the recoverable esophagus metal stent to contract, the mouth side end contracts to drive the whole metal stent to contract, and the recovery wire device can be reserved on the esophagus mouth side after the recoverable esophagus metal stent is released to adjust the position of the metal stent, so that an esophagus stent adjuster is needed to adjust the position of the recoverable metal stent again or take out the recoverable metal stent.

At present, foreign body forceps or mouse-tooth forceps are used for adjusting the metal support which cannot be recycled, the metal support is still in a fully expanded state when the foreign body forceps or the mouse-tooth forceps clamp the metal support for adjustment, the metal support is fully attached to the inner wall of an esophagus, the operation is difficult when the metal support is adjusted up and down in the cavity of the esophagus, time and labor are wasted, and the risk of mucosa damage, bleeding and even perforation can be caused, so that the risk of the method is high.

When the recoverable metal bracket is adjusted, the metal hook in the plastic pipe manufactured by the user is matched with the metal bracket to adjust, as shown in fig. 4, a steel wire 22 is arranged in the plastic pipe 21, one end part of the steel wire is made into a hook shape 23, and the other end of the steel wire is connected with a pull ring 24, so that the recoverability of the metal bracket can be realized, but the recoverable metal bracket has the following defects in the using process:

(1) the operating level and clinical experience of operators are extremely high; (2) after the instrument enters, when the hook-out direction is adjusted, the hook-out direction is difficult to control, so that the operation time is increased, and the operation risk is also increased; (3) when the metal support is recovered, the back-pulling distance of the metal hook can not be accurately controlled, and when the back-pulling distance of the metal hook is too short, the metal support is still in an expansion state, so that the metal support is inconvenient to adjust; (4) when the distance between the pull-back metal hooks is too long, the metal bracket wire recovery device can be damaged, so that the metal bracket cannot be continuously adjusted and needs to be taken out by a surgical operation; (5) the extension end of the other end of the hook is a straight metal wire, the metal wire is easy to bend when the hand exerts force in the pulling-back process, the bent metal wire is difficult to enter the sleeve again, and the metal bracket cannot be released again when the recyclable metal bracket is adjusted to a proper position; (6) the recovery wire is embedded into the front end of the plastic pipe due to the deformation of the plastic pipe in the pulling process, so that the metal bracket of the plastic pipe cannot be released smoothly, and the operation risk is increased; (7) and in the operation process, the hook hooks the external plastic pipe in the pulling-back process, so that the hook cannot play a role in recovering the metal bracket, and further cannot work normally.

Disclosure of Invention

In order to solve the above problems existing in the operation difficulty when the prior recoverable esophagus metal support is shifted or drops, the utility model aims to provide a recoverable esophagus metal support adjuster with reasonable and practical structure, which has the advantages of simple structure, simple and convenient operation, low cost and safe realization of adjusting the position and taking out the function of the recoverable metal support.

The utility model discloses an adopt following technical scheme to realize:

a recoverable esophageal metal stent adjuster comprises a fixed seat and a movable seat.

The middle of the fixed seat is provided with a push-pull rod channel, the front side of the push-pull rod channel is provided with an observation groove along the axial direction of the push-pull rod channel, scales for displaying the position of the hook are marked along the observation groove, the end part of the push-pull rod channel is connected with a sleeve, and the end part of the sleeve is provided with a metal ring opening.

The movable seat is connected with a push-pull rod, a marking loop line is arranged at the end of the push-pull rod, the end of the push-pull rod is connected with a guide wire, the end of the guide wire is connected with a hook seat, and a hook is installed on the hook seat.

When the push-pull rod is inserted into the push-pull rod channel, the marking ring line of the push-pull rod is aligned with the 0 scale at the observation groove, and the hook is just positioned at the metal ring opening at the end part of the sleeve.

Preferably, finger ring openings are symmetrically formed in the fixed seat on two sides of the push-pull rod channel, and finger ring openings are formed in the movable seat; the finger ring mouth is designed to facilitate the operation of the adjuster by one hand of an operator.

Preferably, the hook seat is taper with the link of seal wire, and the hook seat can be very smoothly got back to in the sheathed tube becket like this, and the couple is installed on the hook seat moreover, catches on the mouth of pipe when avoiding the couple to return back, causes to return back the failure.

Preferably, be equipped with the location screw socket on the push-and-pull rod passageway, the location screw socket internal rotation is twisted there is the setting element, fixes a position the push-and-pull rod, and then sliding seat and fixing base position relatively fixed liberate art person's both hands, remove whole adjuster and can adjust recoverable esophagus metal support's position.

When the retractable esophagus metal support is used, when the retractable esophagus metal support is shifted or falls into the stomach, the gastroscope is used for entering the esophagus or the stomach, the retrieval line device at the upper end of the shifted or fallen retractable esophagus metal support is found, the instrument is unfolded from the sterile package, the positioning piece is unscrewed, the mark line on the push-pull rod of the movable seat is pushed to be below a 0-scale mark, the hook body is retracted into the sleeve at the moment, the inner wall of the pore passage is prevented from being lost when the hook body enters the endoscope biopsy pore passage, the instrument is fed through the biopsy pore passage of the gastroscope, enters the biopsy pipeline and extends out from the endoscope tip part after the endoscope tip part is extended, the fixed seat is not moved, the movable seat is pushed, the hook seat and the hook are pushed out through the push-pull rod and the guide wire, if the direction is not convenient for retrieving the hook retrieval line device, the hook part, the guide wire, the push-, the movable seat is pulled back, the hook body is pulled back into the sleeve through the guide wire and the hook seat, the mark line of the push-pull rod on the movable seat is observed to be positioned on the scale mark line on the push-pull rod channel of the fixed seat, the length of the hook body pulled back into the sleeve is judged, the metal ring opening structure at the front end of the sleeve prevents the recovery line from being embedded into the front end of the plastic pipe, so that the metal support of the recoverable esophagus cannot be released smoothly, when the metal support of the recoverable esophagus contracts to be adjusted up and down, the positioning piece is screwed, the movable seat and the fixed seat are relatively fixed, the adjuster is integrally moved, when the metal support of the recoverable esophagus is adjusted to a proper position, the positioning piece is reversely screwed to be opened, the fixed seat is not moved, the handle of the movable seat is pushed forwards and is carefully pushed to about 1cm above the scale mark line 0, so that the metal support is fully expanded, i.e. the adjustment is finished.

The utility model has the advantages of as follows:

(1) when the recyclable esophageal metal stent is adjusted, a patient can adjust the recyclable esophageal metal stent without being numb, if the adjustment time is long, the patient needs to have strong tolerance degree and active cooperation, and the risk of an operator is increased. The hook body of the apparatus has a rotating function, and the hook body is driven to rotate by rotating the handle of the movable seat clockwise and anticlockwise, so that the wire take-up device can be conveniently hooked and taken back; the relative position of the hook body can be fixed by screwing the positioning piece, the positions of the handles are fixed by hands for a long time, the operation is simple and convenient, the operation time is saved, and the operation difficulty and the operation risk are reduced.

(2) When the recyclable esophageal metal stent is adjusted, the scale marks (unit: cm) beside the observation groove of the fixed seat handle are matched with the mark lines of the movable seat handle, and when the mark lines of the movable seat handle are used, the positions of the mark lines of the push-pull rod of the movable seat on the scale lines of the fixed seat handle can be pushed, so that the distance from the front end hook body to the sleeve and the length of the front end hook body pulled back into the sleeve can be accurately judged, the positioning is accurate, and the purpose that the patient has a count in mind is achieved.

(3) When the recyclable esophageal metal bracket is adjusted, the handle structure is convenient to operate, and the hook part base structure ensures that the hook body is pulled back into the sleeve in hundreds of percent when the pushing handle is pulled back; the metal ring opening structure at the front end of the sleeve prevents the plastic pipe from deforming, the recovery line device is embedded into the front end of the plastic pipe to enable the metal support of the plastic pipe to be incapable of being released smoothly, and the recovery line device is simple in structure, simple, convenient and fast to operate and safe to use.

(4) The application of the device can effectively adjust the position of the recoverable esophageal metal bracket, solves the problem that the patient performs the operation again due to the displacement or the falling off of the metal bracket, saves the operation cost of the patient and shortens the operation time.

The utility model has reasonable design, simple structure and low cost, and has good practical application value for the adjustment and the taking out of the recoverable esophagus metal bracket.

Drawings

Fig. 1 shows a schematic connection diagram of a movable seat, a push-pull rod, a guide wire, a hook seat and a hook (located on the same axis).

Fig. 2 shows a schematic connection diagram of the fixing seat and the sleeve.

Fig. 3a shows the adjuster structure (the marked ring line is aligned with 0 scale, and the hook is located at the metal ring opening).

Figure 3b shows a schematic view of the adjuster (the marked loop lines are aligned with 2 graduations and the hook extends 2cm beyond the metal loop opening).

Figure 3c shows the adjuster structure (the marked loop lines are aligned with the-2 scale and the hook is retracted 2cm from the metal loop).

Figure 4 shows a prior art recyclable esophageal metal stent adjuster.

FIG. 5 shows a schematic view of a fully-coated metal stent.

In the figure: 1-a fixed seat, 2-a push-pull rod channel, 3-a finger ring opening, 4-an observation groove, 5-a positioning screw opening, 6-scales, 7-a sleeve, 8-a metal ring opening, 9-a movable seat, 10-a push-pull rod, 11-a marked loop line, 12-a guide wire, 13-a hook seat and 14-a hook; 20-recovery ring (also called take-up), 21-plastic tube, 22-steel wire, 23-hook and 24-pull ring.

Detailed Description

The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.

A recoverable esophageal metal stent adjuster comprises a fixed seat 1 and a movable seat 9.

As shown in fig. 2, a push-pull rod channel 2 is arranged in the middle of a fixed seat 1, finger ring openings 3 are symmetrically formed in the fixed seat 1 at two sides of the push-pull rod channel 2, an observation groove 4 is formed in the front of the push-pull rod channel 2 along the axial direction of the push-pull rod channel, scales 6 (including scales of-4, -3, -2, -1, 0, 1, 2 and the like, and the unit is cm) for displaying the position of a hook are marked along the observation groove 4, a sleeve 7 is connected to the end portion of the push-pull rod channel 2, and a metal ring opening 8 is formed in. The push-pull rod channel 2 is provided with a positioning screw port 5, a positioning piece is screwed in the positioning screw port 5, and the positioning piece is screwed in the positioning screw port through a thread structure and positions the push-pull rod through screwing.

As shown in fig. 1, a finger ring opening 3 is formed on a movable seat 9, the movable seat 9 is connected with a push-pull rod 10 (which is cylindrical), a marking ring line 11 is arranged at the end part of the push-pull rod 10, the end part of the push-pull rod 10 is connected with a guide wire 12, the end part of the guide wire 12 is connected with a hook seat 13, and a hook 14 is arranged on the hook seat 13; the connecting end of the hook seat 13 and the guide wire 12 is conical.

When the push-pull rod 10 is inserted into the push-pull rod channel 2 with its marking ring line 11 aligned with the 0 scale at the viewing slot 4, the hook 14 is located just at the metal ring opening 8 at the end of the sleeve 7, as shown in fig. 3 a.

When the push-pull rod 10 is inserted into the push-pull rod channel 2 with its marking loop line 11 aligned with the 2-point scale at the observation groove 4, the hook 14 extends out of the metal loop opening 8 at the end of the sleeve 7 by a distance of 2cm, as shown in fig. 3 b.

When the push-pull rod 10 is inserted into the push-pull rod channel 2 with its marking loop line 11 aligned with the-2 scale at the observation groove 4, the hook 14 is retracted to the metal loop opening 8 at the end of the sleeve 7 by a distance of 2cm, as shown in fig. 3 c.

When the device is used, when a patient can recover the esophagus metal support to shift or fall into the stomach, the gastroscope is used for entering the esophagus or the stomach, the recovery line device at the upper end of the shifted or fallen recoverable esophagus metal support is found, after the device is unfolded from the sterile bag, the device is in a sterile state, whether the device can be safely used is checked in vitro, the mobility of the handle is checked, the positioning piece is unscrewed, the mark line of the push-pull rod of the movable seat is pushed to be below 0 scale mark (when the mark line on the push-pull rod is positioned at the 0 scale mark, the hook body is positioned at the opening of the sleeve, when the mark line on the push-pull rod is positioned at a position 2cm above the 0 scale mark, the hook body extends out of the opening of the sleeve by 2cm, when the mark line on the push-pull rod is positioned at a position of-2 cm below the 0 scale mark, the hook body is positioned at a position 2cm away from the opening in the sleeve, after the instrument enters a biopsy pipeline and extends out from the tip part of an endoscope, the fixed seat is fixed, the movable seat is pushed, the hook seat and the hook are pushed out through the push-pull rod and the guide wire, if the direction is inconvenient for hooking and taking back the take-up device, the hook part, the guide wire, the push-pull rod and the movable seat form an axis, the rotation of the direction of the hook at the tip can be realized by rotating the movable seat, the proper direction is adjusted, the hook takes back the take-up device, the hook body is pulled back to the sleeve through the guide wire and the hook seat, simultaneously, the position of a mark line on the movable seat on a scale line on the push-pull rod channel of the fixed seat is observed to judge the length of the pull-back recovery line of the hook body entering the sleeve, the metal ring opening structure at the front end of the sleeve prevents the plastic pipe from deforming, the recovery line is embedded into the front end to ensure that, the movable seat and the fixed seat are relatively fixed, the adjuster is integrally moved, when the recoverable esophagus metal support is adjusted to a proper position, the positioning piece is reversely screwed to be opened, the fixed handle is not moved, the movable seat is pushed forwards, the position is carefully pushed to be about 1cm above the 0 scale mark, the metal support is fully expanded, the hook body leaves the recovery line device, the hook is pulled back into the sleeve again, the device is withdrawn, and the adjustment is finished.

When the concrete implementation, fixed handle: the fixed handle is sleeved on the pushing handle in a penetrating mode, scales (unit: cm) of length measuring units are designed beside an observation groove of the fixed handle, a positioning hole is formed in the fixed handle, a positioning piece is screwed in the positioning hole in a screwed mode, and the pushing handle is fixed in position through the positioning piece.

Pushing a handle: the push-pull handle is provided with a connecting end at the end part of the push-pull rod, the connecting end is connected with a guide wire, the push-pull rod of the push handle is provided with a positioning mark, the relative position of a hook at the front end of the sleeve is determined by the mark on the push handle and the scale beside the fixed handle observation groove, the push-pull rod is inserted into the push-pull rod channel of the fixed handle to carry out axial movement, and meanwhile, the radial positioning effect can be achieved; the hook part, the guide wire, the pushing rod and the movable seat form an axis, and the rotation of the front end hook in the direction can be realized by rotating the pushing handle.

Hook part: the lower part of the base is an inverted cone, and the vertex of the cone is connected with the upper part of the guide wire; the upper portion of base is the cylinder, and the coupler body is located base cylinder platform central authorities, and the advantage of base is when pulling back the propelling movement handle each time, and it is intraductal to make hundreds of pull-backs of coupler body to the sleeve through seal wire and base, prevents that the coupler body from hooking the sleeve edge and causing the failure of pulling back.

Sleeving a sleeve: the sleeve is made of X-ray developing materials and is tightly locked at the end part of a push-pull rod channel of the fixed handle through the screw cap, the front end of the sleeve is designed to be in a metal ring shape, and the situation that the recovery wire is embedded into the front end of the plastic pipe to enable a metal support of the plastic pipe to be incapable of being smoothly released due to the fact that the front end of the plastic pipe deforms in the pull-back process is avoided.

Guide wire: one end of the guide wire is connected with the connecting end of the push-pull rod of the push handle and penetrates through the sleeve, the other end of the guide wire is connected with the vertex of the base of the hook part, and the guide wire is externally coated with an X-ray developing material or is made of the X-ray developing material.

The technical solution of the present invention is clearly and completely described above. Obviously, the embodiments described are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments made by those skilled in the art without any inventive work should also belong to the protection scope of the present invention.

Claims

1. A recoverable esophagus metal stent adjuster is characterized in that: comprises a fixed seat (1) and a movable seat (9);

a push-pull rod channel (2) is arranged in the middle of the fixed seat (1), an observation groove (4) is formed in the front face of the push-pull rod channel (2) along the axial direction of the push-pull rod channel, scales (6) for displaying the relative position of the hook are marked along the observation groove (4), a sleeve (7) is connected to the end portion of the push-pull rod channel (2), and a metal ring opening (8) is formed in the end portion of the sleeve (7);

the movable seat (9) is connected with a push-pull rod (10), a marking loop line (11) is arranged at the end part of the push-pull rod (10), the end part of the push-pull rod (10) is connected with a guide wire (12), the end part of the guide wire (12) is connected with a hook seat (13), and a hook (14) is installed on the hook seat (13);

when the push-pull rod (10) is inserted into the push-pull rod channel (2) and the marking ring line (11) of the push-pull rod is aligned with the 0 scale mark at the observation groove (4), the hook (14) is just positioned at the metal ring opening (8) at the end part of the sleeve (7).

2. The recoverable esophageal metal stent adjuster according to claim 1, wherein: finger ring openings (3) are symmetrically formed in the fixed seat (1) and located on two sides of the push-pull rod channel (2), and the movable seat (9) is provided with the finger ring openings (3).

3. The recoverable esophageal metal stent adjuster according to claim 1, wherein: the connecting end of the hook seat (13) and the guide wire (12) is conical.

4. The recoverable esophageal metal stent adjuster according to claim 1, 2 or 3, wherein: the push-pull rod channel (2) is provided with a positioning screw (5), and a positioning piece is screwed in the positioning screw (5).