CN205268236U

CN205268236U - Novel calculus extraction basket

Info

Publication number: CN205268236U
Application number: CN201520818125.5U
Authority: CN
Inventors: 张壮利; 黎洁; 向勇刚
Original assignee: CHANGZHOU LEO MEDICAL TECHNOLOGY Co Ltd
Current assignee: Leo Medical Co ltd
Priority date: 2015-10-22
Filing date: 2015-10-22
Publication date: 2016-06-01
Anticipated expiration: 2025-10-22

Abstract

The utility model provides a novel calculus extraction basket, includes the head, basket body, dabber, push rod, epitheca pipe, fixed handle, removable handle, intraductal basket chamber and the seal wire chamber of being provided with of epitheca is respectively through basket and seal wire, push rod and removable handle can separate, and the rubble device can be connected to the push rod, basket chamber and the export of seal wire chamber distal end set up at the coplanar to be located epitheca pipe axial direction, the near -end export of seal wire chamber can set up in epitheca pipe near -end side, or sets up in epitheca pipe distal end side.

Description

A kind of novel stone extraction basket

Technical field

This utility model relates to technical field of medical instruments, is a kind of novel stone extraction basket, and this device is applicable to liver inside and outside bile duct stone patient, in endoscopic surgery process, calculus in bile duct is taken out by this device.

Background technology

In China's surgical diseases classification, Biliary Calculi has higher sickness rate, newly increases patient every year and reaches millions of, and Biliary Calculi disease brings very big misery to patient. Current treatment means is divided into two kinds, and a kind of for by surgically taking stone, calculus, by tissues such as the bile ducts of surgical incision patient, is taken out after arriving stone location by which; Operation wound is relatively larger, and it is long that patient recovers the cycle, costly; Another way is by endoscopic technic, by duodenum, dedicated conduits is arrived bile duct position, then calculus is taken out with the device such as sacculus, basket. Which wound is little, and patient recovers fast, but requires higher to the operation of doctor. Along with technological progress, increasing patient accepts Wicresoft and takes stone operation.

When taking stone operation by scope Wicresoft, main stone taking device is stone extraction basket, it is generally the case that basket is the helicoidal structure of several tinsel composition, and compression before use enters in outer sheath, is placed on stone location far-end under scope guides. After outer sheath being withdrawn, basket discharges and is opened into netted, is pulled and rotates the control seal wire of basket by doctor in vitro, be received in basket by calculus, overlaps from bile duct. Running into the calculus being relatively large in diameter, the mode that can pass through laser or machinery clears out of bile duct after calculus pulverizing.

This operation is desirable for choledoch-calculi therapy effectiveness comparison at present. But for the narrow elongate section of stones in intrahepatic bile duct, common basket limits due to structure, it is difficult to arrive the narrow elongate section of stones in intrahepatic bile duct, the calculus of stones in intrahepatic bile duct takes stone operation by tradition basket and is difficult to take out. Therefore, how stone extraction basket can push to calculus of intrahepatic duct position smoothly is the key that clinic takes stone successful surgery, is the problem of the highly desirable solution of clinician. Tradition basket is coaxial structure simultaneously, can only use long seal wire, it is necessary to longer seal wire swap time. For this, be also required to develop the basket of a kind of novel rapid exchange configuration clinically, convenient operation, shorten treatment time.

Utility model content

In order to solve the problems referred to above of prior art, the purpose of this utility model is to provide a kind of novel stone extraction basket: under the guide function of seal wire, and basket is easier to enter into the position of stones in intrahepatic bile duct; Compatible length seal wire, supports multiple seal wire exchanged form, both can be applicable to coaxial-type stone extraction basket, it is possible to be applied to fast-swap stone extraction basket; Push rod and removable handle part can dismantle separation, support the rubble operation in clinic.

To achieve these goals, this utility model be the technical scheme is that

A kind of novel stone extraction basket, by head, basket body, mandrel, push rod, outer sheath, the part composition such as fixed handle, removable handle; Wherein, head, basket body, mandrel, push rod is sequentially connected with and is integrated, and is installed on the basket chamber of outer sheath; Outer sheath and fixed handle connect; Push rod is connected with removable handle after passing through fixed handle; Removable handle drives push rod, moves back and forth and control the turnover in outer sheath of the basket body in fixed handle so that basket body is in and launches or the state of Guan Bi.

Independent basket chamber and guidewire lumen it is provided with in described outer sheath. Basket chamber is for by basket body, mandrel and push rod; Guidewire lumen is used for passing through seal wire.

Described push rod and removable handle can separate, and push rod can connect calculi breaking device. Operating if desired for rubble in operation process, then connect rubble apparatus after being disassembled from removable handle by push rod, row rubble is performed the operation.

The guidewire lumen proximal outlet of described outer sheath is arranged on outer sheath proximal side, or is arranged on outer sheath distal side. When being arranged on proximal side, then stone extraction basket is coaxial structure, coordinates long seal wire to use. When being arranged on distal side, then stone extraction basket is rapid exchange configuration, coordinates short-length guidewires to use. Under normal circumstances, long guidewire length is 4.5m, and short-length guidewires length is 2.6m. Different guidewire lumen proximal outlet positions is applicable to the seal wire of different length. Said structure supports multiple seal wire exchanged form, meets different clinical needs.

The basket chamber of described outer sheath and guidewire lumen remote outlet are arranged on same direction, and are positioned on outer sheath axial direction. Use middle seal wire to first pass through guidewire lumen to push ahead, after arriving target location, along seal wire, outer sheath is pushed to target site together with the basket body within income, launch basket body and complete to take stone operation.

The guidewire lumen remote outlet place of described outer sheath is provided with slope chamfering. Due to the factor in structure, outer sheath external diameter is bigger than head. Therefore slope chamfering is set at guidewire lumen remote outlet place, is easily introduced into operation.

The basket chamber of described outer sheath and guidewire lumen cross sectional shape are the geometries such as circle, ellipse, crescent. Two tracts require there is as far as possible big cross section, facilitate internal part/equipment to pass through.

Described outer sheath outside dimension is 1.5-3.5mm.

Described outer sheath material is the medical polymer materials such as PTFE, PA. Material requirements surface lubrication, hot strength, bend resistance, non-deformability are good, require possess good biocompatibility simultaneously.

The beneficial effects of the utility model are: basis is novel accurately can push to desired location easily by stone extraction basket, supports multiple seal wire exchanged form, it is possible to connect calculi breaking device. Product structure is simple, easy to operate, function is integrated, of many uses, it is possible to reduce operation technique difficulty, save operating time, reduce medical expense, it is adaptable to endoscopic Biliary Calculi take stone and rubble operation.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Below in conjunction with drawings and Examples, this utility model is further illustrated.

Fig. 1-1 is population structure schematic diagram.

Fig. 1-2 is outer sheath sectional view.

Fig. 2 is basket body deployed condition schematic diagram.

Fig. 3 is basket body closure state schematic diagram.

In figure: 1. head, 2. basket body, 3. mandrel, 4. push rod, 5. outer sheath, 5.1 guidewire lumen, 5.2 basket chamber, 6. fixed handle, 7. removable handles.

Detailed description of the invention

Referring now to accompanying drawing, the utility model is described in further detail.

As shown in Fig. 1-1 and Fig. 1-2, a kind of novel stone extraction basket, by head 1, basket body 2, mandrel 3, push rod 4, outer sheath 5, the part composition such as fixed handle 6, removable handle 7; Wherein, head 1, basket body 2, mandrel 3, push rod 4 is sequentially connected with and is integrated, and is installed in the basket chamber 5.2 of outer sheath 5; Outer sheath 5 and fixed handle 6 connect; Push rod 4 is connected with removable handle 7 after passing through fixed handle 6; Removable handle 7 drives push rod 4, moves back and forth and control the basket body 2 turnover in outer sheath 5 in fixed handle 6. Being provided with independent guidewire lumen 5.1 in outer sheath 5, seal wire can move in tract. Push rod 4 and removable handle 7 can separate, and push rod 4 can connect calculi breaking device.

Guidewire lumen 5.1 proximal outlet can be arranged on outer sheath 5 proximal side, or is arranged on outer sheath 5 distal side. When being arranged on proximal side, then stone extraction basket is coaxial structure; When being arranged on distal side, then stone extraction basket is rapid exchange configuration.

As shown in Figures 2 and 3, basket chamber 5.2 and guidewire lumen 5.1 remote outlet are arranged on same direction, and are positioned on outer sheath 5 axial direction. Guidewire lumen 5.1 remote outlet place is provided with the slope chamfering being easily introduced into.

Basket chamber 5.2 and guidewire lumen 5.1 cross sectional shape can be the geometries such as circle, ellipse, crescent.

Outer sheath 5 outside dimension is 1.5-3.5mm, and material is the medical polymer materials such as PTFE, PA. Material requirements surface lubrication, hot strength, bend resistance, non-deformability are good, require possess good biocompatibility simultaneously.

In use procedure, basket body 2 is kept closed, first seal wire is placed on target location, guidewire proximal is inserted the distal openings of guidewire lumen 5.1, advance whole outer sheath 5 body along seal wire, pass from guidewire lumen 5.1 proximal openings to guidewire proximal. Continue forward impelling whole outer sheath 5 body along seal wire until target site, keep the motionless recession fixed handle 6 of removable handle 7, launch basket body 2, complete to take stone operation. If desired for rubble, then removable handle 7 is removed from push rod 4, push rod 4 is connected calculi breaking device, complete rubble operation. After all operations terminates, basket body 2 being replied closure state, whole product withdraws from endoscopic forceps channel. Depending on concrete condition, seal wire decides whether that continue indwelling carries out next step operation in human body.

This utility model has simple in construction, easy to operate, function is integrated, of many uses, it is possible to reduce operation technique difficulty, save operating time, reduce medical expense. Suitable in endoscopic Biliary Calculi take stone and rubble operation.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments. Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.

Claims

1. a novel stone extraction basket, it is characterised in that: described stone extraction basket is by head, basket body, mandrel, push rod, outer sheath, and fixed handle, removable handle form; Wherein, head, basket body, mandrel, push rod is sequentially connected with and is integrated, and is installed on the basket chamber of outer sheath, outer sheath and fixed handle connect, push rod is connected with removable handle after passing through fixed handle, and removable handle drives push rod, moves back and forth the turnover controlled in basket sheath pipe outside in fixed handle.

2. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that be provided with independent basket chamber and guidewire lumen in described outer sheath, basket chamber is for by basket body, mandrel and push rod, and guidewire lumen is used for passing through seal wire.

3. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described push rod and removable handle can separate, and push rod can connect calculi breaking device.

4. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described guidewire lumen proximal outlet is arranged on outer sheath proximal side, or is arranged on outer sheath distal side.

5. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described basket chamber and guidewire lumen remote outlet are arranged on same direction, and are positioned on outer sheath axial direction.

6. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described guidewire lumen remote outlet place is provided with slope chamfering.

7. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described basket chamber and guidewire lumen cross sectional shape are the geometries such as circle, ellipse, crescent.

8. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described outer sheath outside dimension is 1.5-3.5mm

9. a kind of novel stone extraction basket as claimed in claim 1, it is characterised in that described outer sheath material is the medical polymer materials such as PTFE, PA.