CN104382677B - One can split point stent pushing system - Google Patents

Abstract

The invention discloses a splittable stent pusher system, which is used for placing the stent into the pathological part of the human body, comprising: a splittable stent pusher and a fixer, wherein the splittable stent pusher includes a pusher main body , an outer sleeve and two pull rings, wherein the pusher main body includes a pusher head, a pusher middle and a pusher tail, along the central axis of the pusher head, the central axis of the pusher middle and the central axis of the pusher tail There is a guide wire channel, and the outer walls of the two ends of the middle part of the pusher are respectively coated with a ring-shaped metal layer, the outer casing is hollow tubular, and the tail of the outer casing is split into two parts symmetrically along the axial direction, and the split two parts are respectively connected with two The pull rings are connected, and two longitudinal split lines are reserved along the junction of the two split parts; the fixer includes an endoscope fixer and a pusher fixer, the endoscope fixer is used to fix the endoscope, and the pusher fixer is used Fix the main body of the pusher in the endoscope biopsy hole on the endoscope.

Description

A splittable stent pushing system

technical field

The invention relates to a splittable stent pushing system, in particular to a splittable stent pushing system used in conjunction with an endoscope.

Background technique

At present, placing stents in the human body through endoscopy has become the main method for treating many malignant and benign lesions. Since the stent came out, it has been recognized by the medical profession for its obvious therapeutic effect and low complication rate.

When the stent is placed, in order to ensure that the stent is accurately released in the lesion, the assistant and the endoscopist must cooperate to control the relative movement of the stent and the overtube, and must be carried out under endoscopic or X-ray monitoring. During the process of releasing the stent , often causes relative displacement between the stent and the outer tube, and a little carelessness will cause the released stent to deviate or even fall off, resulting in failure of the operation. Therefore, the technical requirements for stent release are high and difficult. It is usually performed by senior doctors or doctors with rich experience in endoscopy, but it is relatively difficult for inexperienced endoscopists. How to accurately locate and release the stent at the preset position is the current bottleneck of this technology.

Contents of the invention

The invention provides a splittable stent pushing system, which is used to solve the problem of difficult positioning and release in the current stent placement technology.

In order to achieve the above object, the present invention provides a splittable stent pushing system, which is used in conjunction with an endoscope to place the stent into the lesion of the human body, including: a splittable stent pusher and a fixer, wherein ,

The splittable stent pusher includes a pusher main body, an outer sleeve and two pull rings, wherein the pusher main body includes a pusher head, a pusher middle and a pusher tail, the pusher head is conical, and the pusher middle is and the tail of the pusher are cylindrical, and the diameter of the middle of the pusher is smaller than the diameter of the tail of the pusher, the central axis of the head of the pusher, the central axis of the middle of the pusher and the central axis of the tail of the pusher coincide on the same straight line, A guide wire channel is arranged along the central axis of the pusher head, the central axis of the middle part of the pusher, and the central axis of the tail of the pusher. The outer walls of the two ends of the middle part of the pusher are respectively coated with a ring-shaped metal layer, and the outer sleeve is a hollow tube. It is made of materials that are easy to tear when subjected to external force. The diameter of the outer casing matches the diameter of the tail of the pusher. The tail of the outer casing is split into two parts symmetrically along the axial direction. The rings are connected, and two longitudinal split lines are reserved along the junction of the two split parts. Before the splittable stent pusher is used, the outer sleeve is arranged in the middle of the pusher and outside the tail of the pusher. The outer sleeve The gap between it and the middle part of the pusher is used to store the stent to be placed in the diseased part of the human body;

The fixer includes an endoscope fixer and a pusher fixer, the endoscope fixer is used for fixing the endoscope, and the pusher fixer is used for fixing the pusher main body in the endoscope biopsy hole on the endoscope.

In an embodiment of the present invention, the pusher holder includes a fixing clip and a fixing clip knob, wherein the fixing clip is used to fix the tail of the pusher, and the fixing clip includes two oppositely arranged clips, and the opening sides of the two clips A groove for fixing the tail of the pusher is respectively provided, and the lower end of one of the clips is symmetrically provided with two cutting knives, and the two cutting knives are used to longitudinally cut the outer casing along the two longitudinal split lines during use of the present invention;

The fixing clip knob is arranged on the other side opposite to the opening side of the two clips, and the fixing clip knob is used for clamping the fixing clip.

In one embodiment of the present invention, the endoscope fixer includes an endoscope fixing groove, a block, a block knob and a block lock button, wherein the shape of the endoscope fixing groove matches the shape of the endoscope section, and the endoscope One side of the fixing groove is provided with an opening, and the blocking piece is arranged transversely at the opening, and the blocking piece knob and the blocking piece locking knob are respectively arranged at two ends of the opening.

When the present invention is in use, since the tail of the pusher is fixed, and the bracket is fixed in the gap between the middle part of the pusher and the outer sleeve, when the outer sleeve is pulled out, the main body of the pusher and the bracket itself will not have any Possibility of displacement. The operator only needs to pull out the outer sleeve to accurately release the stent at the predetermined position without worrying about the displacement of the stent during the release process.

The present invention has the following beneficial effects:

(1) The present invention greatly improves the accuracy of stent release, greatly reduces the technical difficulty of stent release, solves the problem of difficult positioning and release in the current stent placement technology, and thus facilitates the high difficulty of placing a stent in the human body Technology is better promoted;

(2) The present invention conceptually changes the idea of maintaining the integrity of the outer sleeve during the traditional stent placement process, making the stent placement process faster and more accurate;

(3) The present invention reduces the difficulty of stent placement, improves the success rate of stent placement, enables young doctors to quickly master the stent placement technique, thereby improving the level of disease diagnosis and treatment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the schematic diagram of the installation of an endoscope, a splittable stent pusher and a fixator according to an embodiment of the present invention;

Figure 2a is a schematic diagram of a pusher body according to an embodiment of the present invention;

Fig. 2b is a schematic diagram of an outer sleeve and a pull ring according to an embodiment of the present invention;

Fig. 2c is a schematic diagram of the bracket pushed by the present invention during use;

Figure 3 is a schematic diagram of the relative positions of the main body of the pusher, the outer sleeve and the bracket before the bracket is released;

Fig. 4 is a schematic diagram of the relative positions of the main body of the pusher, the outer sleeve and the stent at a certain moment during the release process of the stent;

Fig. 5 is a schematic diagram of the relative positions of the main body of the pusher, the outer sleeve and the bracket after the release of the bracket is completed;

Figure 6a is a front view of a fixture according to an embodiment of the present invention;

Fig. 6b is a perspective view of a fixer according to an embodiment of the present invention;

Fig. 6c is a partially enlarged view of the clip and the cutter according to an embodiment of the present invention.

Explanation of reference signs: A-endoscope; B-splittable stent pusher; C-fixer; a-endoscope biopsy port; 1-pusher main body; 11-pusher head; 12-pusher middle ;13-tail of pusher; 2-overtube; 3-pull ring; 4-guide wire channel; 5-annular metal layer; 6-longitudinal split line; 7-bracket; Device; 91-endoscope fixing groove; 92-block; 93-block knob; 94-block lock button; 10-pusher holder; 101-fixing clip; 102-fixing clip knob; 10111-groove; 10112-cutter.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Figure 1 is a schematic diagram of the installation of an endoscope, a splittable stent pusher and a fixer according to an embodiment of the present invention. As shown in the figure, the splittable stent pusher system provided by the present invention is used in conjunction with an endoscope A, including : Splittable stent pusher B and fixer C, wherein endoscope A is fixed in the endoscope fixing groove on fixer C, and the part below the tail of splittable stent pusher B is fixed on the endoscope In the endoscopic biopsy port a, the fixing clip on the fixer C is used to clamp the tail of the pusher in the splittable stent pusher B.

Fig. 2a is a schematic diagram of the main body of the pusher according to an embodiment of the present invention, and Fig. 2b is a schematic diagram of an outer sleeve and a pull ring according to an embodiment of the present invention; , outer casing 2 and two pull rings 3, wherein, pusher main body 1 comprises pusher head 11, pusher middle part 12 and pusher tail part 13, pusher head 11 is conical, pusher middle part 12 and pusher The tail portions 13 are all cylindrical, and the diameter of the pusher middle portion 12 is smaller than the diameter of the pusher tail portion 13, the central axis of the pusher head 11, the central axis of the pusher middle portion 12 and the central axis of the pusher tail portion 13 coincide on the same plane On the straight line, along the central axis of the pusher head 11, the central axis of the pusher middle part 12 and the central axis of the pusher tail part 13, a guide wire channel 4 is arranged, and the outer walls of the two ends of the pusher middle part 12 are respectively coated with a ring-shaped metal layer 5. The outer casing 2 is hollow tubular, which is made of a material that is easily torn when subjected to external force. The diameter of the outer casing 2 matches the diameter of the tail 13 of the pusher, and the tail of the outer casing 2 is split symmetrically in the axial direction. Two parts, the two split parts are respectively connected with the two pull rings 3, and two longitudinal split lines 6 are reserved along the junction of the two split parts. Before the splittable support pusher is used, the coat The tube 2 is arranged outside the middle part 12 of the pusher and the tail part 13 of the pusher, and the gap between the outer sleeve 2 and the middle part 12 of the pusher is used to store the stent to be placed in the diseased part of the human body.

Fig. 2c is a schematic diagram of the bracket pushed by the present invention during use, which is the shape of the bracket 7 in a natural state.

Fig. 2a, Fig. 2b and Fig. 2c have respectively presented the schematic diagram of pusher main body 1, outer tube 2 and pull ring 3, support 7, for the convenience of clinical use, the present invention has just been used Fig. 2a, Fig. 2b and Fig. 2c The various parts presented in are assembled together, as shown in Fig. 3, and it is not necessary to temporarily assemble it before use, and the use process of the present invention will be described in detail below.

Figure 3 is a schematic diagram of the relative positions of the pusher main body 1, the outer sleeve 2 and the support 7 before the release of the support 7; When the support 7 is wrapped by the outer sleeve 2, it is in an unexpanded state. In addition, before the stent 7 is released, the guide wire 8 is located in the guide wire channel 4 , and a part of both ends of the guide wire 8 is located outside the guide wire channel 4 .

Figure 4 is a schematic diagram of the relative positions of the pusher main body 1, the outer sleeve 2 and the bracket 7 at a certain moment during the release process of the bracket 7; as can be seen from Figure 4, during the release process of the bracket 7, the surface of the outer sleeve 2 The two longitudinal split lines 6 are gradually split, the outer sleeve 2 is gradually pulled away from the stent 7, and the lower part of the stent 7 is released first.

Figure 5 is a schematic diagram of the relative positions of the pusher main body 1, the outer sleeve 2 and the bracket 7 after the release of the bracket 7 is completed; it can be seen from Figure 5 that after the release of the bracket 7 is completed, the outer sleeve 2 is completely pulled away from the bracket 7, The bracket 7 is completely released.

Fig. 6a is a front view of a fixator according to an embodiment of the present invention, and Fig. 6b is an oblique view of a fixator according to an embodiment of the present invention; wherein, the fixator in the present invention includes an endoscopic fixator 9 and a pusher fixator 10, the inner The mirror holder 9 is used to fix the endoscope, and the pusher holder 10 is used to fix the pusher main body in the endoscope biopsy port on the endoscope, so as to ensure that the position of the pusher main body 1 is fixed.

As can be seen from Figures 6a and 6b, the pusher holder 10 includes a fixing clip 101 and a fixing clip knob 102, wherein the fixing clip 101 is used to fix the pusher tail 13, and the fixing clip 101 includes two oppositely arranged clips 1011 . The fixing clip knob 102 is disposed on the other side opposite to the opening side of the two clips 1011 , and the fixing clip knob 102 is used for clamping the fixing clip 101 .

Figure 6c is a partially enlarged view of the clip and the cutter according to an embodiment of the present invention. As shown in the figure, the opening sides of the two clips 1011 are respectively provided with a groove 10111 for fixing the pusher tail 13, one of which is The lower end of the clip is symmetrically provided with two cutting knives 10112, and the two cutting knives 10112 are used to longitudinally cut the outer sleeve 2 along the two longitudinal splitting lines 6 during use of the present invention.

As can be seen from Fig. 6a and Fig. 6b, the endoscope holder 9 includes an endoscope fixing groove 91, a blocking piece 92, a blocking piece knob 93 and a blocking piece locking knob 94, wherein the shape of the endoscope fixing groove 91 is consistent with the shape of the endoscope section. Matching the shape of the endoscope, one side of the endoscope fixing groove 91 is provided with an opening, the baffle 92 is horizontally arranged at the opening, and the baffle knob 93 and the baffle locking knob 94 are respectively arranged at the two ends of the opening.

The method of using the present invention to place the stent is as follows. First, the endoscope fixing groove 91 is fastened to the mirror body part below the endoscope biopsy port a, and the stopper 92 is locked by rotating the stopper knob 93 and the stopper lock button 94. Tighten the endoscope fixing groove 91 to fix the endoscope holder 9 on the endoscope A. Next, the endoscope A is used to locate the lesion, and after positioning, a guide wire 8 is inserted along the biopsy port a of the endoscope, so that the guide wire 8 passes over the lesion where the stent 7 needs to be placed. Then send the splittable stent pusher B containing the stent 7 from the biopsy port a of the endoscope along the guide wire 8. At this time, the ring-shaped metal layer 5 on the middle part 12 of the pusher should be observed with the cooperation of an endoscope or X-ray. Adjust the sending depth of the splittable stent pusher B so that the metal layer 4 is just at the lesion position where the stent 7 is to be placed. After determining and adjusting the sending depth of the splittable stent pusher B, split the two longitudinal split lines 6 reserved on the surface of the overtube 2 to the endoscope biopsy port a on the endoscope A and the pusher fixing clip 91. between. Clamp the pusher tail 13 with the fixing clip 101 , and adjust the fixing clip knob 102 so that the fixing clip 101 clamps the pusher tail 13 . The above is the preparatory work before the release of the bracket 7, and then the operation of releasing the bracket 7 is officially carried out, and the two pull rings 3 on the outer sleeve 2 are respectively pulled outward with two fingers of one hand, and are located on one of the clips 1011 The two cutting knives at the lower end split the two longitudinal splitting lines 6 reserved on the surface of the outer sleeve 2 , that is, the operation of splitting the outer sleeve 2 is completed simultaneously during the process of pulling the outer sleeve 2 . Pull the overtube 2 all the way outward until the stent 7 is completely released.

During the above-mentioned operation process, since the pusher tail 13 is fixed on the fixing clip 101, the pusher main body 1 and the support 7 will not be displaced due to the external pull of the outer sleeve 2, and the support 7 will not be released during the release process until it is completely released. They are all located at the middle part 12 of the pusher, so as long as the rear part 13 of the pusher is not displaced during the release process, the stent 7 can be accurately released to the lesion. After the stent 7 is released, rotate the fixing clip knob 102 to release the fixing clip 101 from the pusher tail 13, and then pull out the splittable stent pusher B and the guide wire 8.

In another embodiment of the present invention, if two cutting knives are not provided at the lower end of the clip 1011, the process of pulling out the outer sleeve 2 needs to be completed with both hands, and the two hands respectively pull the two pullers on the outer sleeve 2. Pulling the ring 3 outward can also split the outer sleeve 2 along the two longitudinal split lines 6 reserved on the surface of the outer sleeve 2 .

The present invention has the following beneficial effects:

(1) The present invention greatly improves the accuracy of stent release, greatly reduces the technical difficulty of stent release, solves the problem of difficult positioning and release in the current stent placement technology, and thus facilitates the high difficulty of placing a stent in the human body Technology is better promoted;

(2) The present invention conceptually changes the idea of maintaining the integrity of the outer sleeve during the traditional stent placement process, making the stent placement process faster and more accurate;

(3) The present invention reduces the difficulty of stent placement, improves the success rate of stent placement, enables young doctors to quickly master the stent placement technique, thereby improving the level of disease diagnosis and treatment.

Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of an embodiment, and the modules or processes in the accompanying drawing are not necessarily necessary for implementing the present invention.

Those of ordinary skill in the art can understand that: the modules in the device in the embodiment may be distributed in the device in the embodiment according to the description in the embodiment, or may be changed and located in one or more devices different from the embodiment. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (3)

1. can a split point stent pushing system, itself and scope with the use of, for support is inserted human lesion position, it is characterized in that, comprising: can split point stent pushing device and holder, wherein,

Describedly can comprise pusher main body by split point stent pushing device, trocar sheath and two draw rings, wherein, described pusher main body comprises pusher head, with pusher afterbody in the middle part of pusher, described pusher head is conical, be cylindrical with described pusher afterbody in the middle part of described pusher, and the diameter in the middle part of described pusher is less than the diameter of described pusher afterbody, the central axis of described pusher head, the central axes of the central axis in the middle part of described pusher and described pusher afterbody is on same straight line, along the central axis of described pusher head, the central axis of the central axis in the middle part of described pusher and described pusher afterbody is provided with a silk guide passage, in the middle part of described pusher two ends outer wall on scribble an annular metal layer respectively, described trocar sheath is hollow tubular, it is made by by the material easily torn during external force, the diameter of described trocar sheath and the diameter of described pusher afterbody match, the afterbody of described trocar sheath vertically symmetry is rived as two parts, the two parts of riving are connected with described two draw rings respectively, the two-part boundary line place of riving described in edge is reserved with two longitudinal splitting lines, described can split point stent pushing device use before, described trocar sheath is arranged in the middle part of described pusher and the outside of described pusher afterbody, gap between in the middle part of described trocar sheath and described pusher for storE the support for inserting human lesion position,

Described holder comprises endoscope fixator and pusher holder, and described endoscope fixator is used for fixing scope, and described pusher holder is for being fixed on described pusher main body in the endoscope movable detecting hole on scope.

2. according to claim 1 can split point stent pushing system, it is characterized in that, described pusher holder comprises fixation clamp and fixation clamp knob, wherein,

Described fixation clamp is used for fixing described pusher afterbody, described fixation clamp comprises two intermediate plates be oppositely arranged, the open side of described two intermediate plates be oppositely arranged is respectively equipped with one for fixing the groove of described pusher afterbody, the lower end of one of them intermediate plate is arranged with two panels cutting knife, and described two panels cutting knife longitudinally cuts described trocar sheath along described two longitudinal splitting lines in use;

Described fixation clamp knob is arranged on the opposite side relative with the open side of described two intermediate plates be oppositely arranged, and described fixation clamp knob is for clamping described fixation clamp.

3. according to claim 1 can split point stent pushing system, it is characterized in that, described endoscope fixator comprises scope holddown groove, catch, catch knob and catch cage knob, wherein, the shape of described scope holddown groove and the mating shapes in described scope cross section, the side of described scope holddown groove is provided with an opening, and described catch is horizontally installed on described opening part, and described catch knob and described catch cage knob are separately positioned on the two ends of described opening.