CN104586454A

CN104586454A - Ligator for surgical operation

Info

Publication number: CN104586454A
Application number: CN201410814076.8A
Authority: CN
Inventors: 雷勇; 林辉; 陈颖; 楼早; 陈乐易; 蔡秀军
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2014-12-23
Filing date: 2014-12-23
Publication date: 2015-05-06
Anticipated expiration: 2034-12-23
Also published as: CN104586454B

Abstract

The invention discloses a ligator for a surgical operation. The ligator comprises an outer barrel, an inner barrel, a driven gear, two driving gears, two gear shafts, a shell, a driving device and a heating device. The cross section of the outer barrel is in a C shape, and the shell is fixed to the side wall of the outer barrel. Sliding space and heating space are arranged in the shell. The inner barrel can advance in the outer barrel along a spiral line. A protrusion is arranged on one end face of the inner barrel, and a protrusion opening is formed in the side face of the protrusion. The sliding space of the shell and a cavity in the protrusion can be communicated through the protrusion opening. The other end of the inner barrel is fixedly connected with the driven gear. The two driving gears drive the driven gear to rotate. The basic function of blood vessel ligation is met, meanwhile, the advantages of being easy and convenient to operate, small in surgical wound, low in injury and the like are achieved, and the development demand of the future minimally invasive operation field is fully met.

Description

Surgical operation ligature carrier

Technical field

The invention belongs to clinical surgery operation treatment field, can be used for out the ligation of blood vessel or tissue in body in abdomen and endoscope-assistant surgery.

Technical background

Ligation is one of operation the most frequently used and the most basic in surgical operation.The prognosis to operating time, operation safety and patient of the quality of ligation and speed has material impact.The surgical ligation method that skilled grasp is correct is surgical necessary requirement.The ligation of traditional surgery is completed by surgeon's manual operations, and the technical limitation existed with chamber mirror technology itself is popularized in the development along with chamber mirror technology, and surgical operation ligation develops into apparatus forceps clamp gradually and closes.The ligation clip closed for clamp is at present prepared the different cardinal principle of material according to it and can be divided into nonabsorable and the large class of Absorbable rod two.But no matter which kind of ligation clip, due to the limitation (clamp tissue is squeezed into linear) of its clamp method itself and the larger volume of ligation clip self, it has impact in various degree to limited surgical field of view, thus the safety of impact operation.In addition, owing to needing the tissue of clamp and blood vessel thickness to come and go in surgery art, this just requires that surgeon must select suitable ligation clip depending on the practical situation of required ligation tissue, this obviously increases the complexity of surgical procedures.Therefore, develop a kind of apparatus imitate manual operation technique to implement to have very important significance to the ligation of tissue and blood vessel.

Summary of the invention

The object of the invention is to the deficiency for ligature type in current surgical operation, a kind of surgical operation ligature carrier is provided.

The object of the invention is to be achieved through the following technical solutions: a kind of surgical operation ligature carrier, comprises urceolus, inner core, driven gear, two driving gears, two gear shafts, housing, driving device and heaters; Wherein, the cross section of described urceolus is C type, and its inwall has female thread; The sidewall of urceolus has rectangle locating slot in the axial direction; Described housing is the cuboid of inner hollow and both ends open, and its inner space is divided into the sliding space for the end of a thread that slides and the heating space for delivery heating device, the cuboid that sliding space is corresponding is provided with one along its length and pushes away groove; Described housing is fixedly connected with urceolus, and is communicated with inner core by rectangle locating slot; The outer wall of described inner core has external screw thread, and described female thread matches with external screw thread, and inner core can be advanced along helix in urceolus; One end face of described inner core is provided with convex body, described convex body inner hollow, has a convex body mouth in the side of convex body; The sliding space of housing can be communicated with the internal cavities of convex body by described convex body mouth; The other end of inner core slightly stretches out urceolus, and is fixedly connected with driven gear; The reference diameter of driven gear is slightly larger than inner diameter of steel flue; Described two driving gears rotate around respective gear shaft respectively, and the common driven gear that drives rotates; Two gear shafts are driven by driving device.

Further, described driving device is that bracing wire driving or motor drive.

Further, described heater is high temperature resistance silk.

The invention has the beneficial effects as follows: surgical operation ligature carrier of the present invention can realize the automatic silk thread knotting in surgical operation, have that volume is little, flexible operation, knotting are reliable, body is without advantages such as obvious rejections.By the flexible design to ligature carrier gage system, knot tying fashion and type of drive, it is made effectively to play the value in surgical operation especially endoscope-assistant surgery.

Accompanying drawing explanation

Fig. 1 is ligature carrier overall structure schematic diagram of the present invention;

Fig. 2 is ligature carrier sectional view;

Fig. 3 is outer tube structure schematic diagram;

Fig. 4 is shell structure schematic diagram;

Fig. 5 is inner tube structure schematic diagram;

Fig. 6 is gear drive schematic diagram;

Fig. 7 is locating fork structural representation;

In figure: urceolus 1, inner core 2, driven gear 3, driving gear 4, gear shaft 5, locating fork 6, housing 7, push away groove 8, convex body 9, convex body mouth 10, blood vessel inlet channel 11, external screw thread 12, locating slot 13, female thread 14.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

As shown in Figure 1, 2, a kind of surgical operation ligature carrier of the present invention, comprises urceolus 1, inner core 2, driven gear 3, two driving gears 4, two gear shafts 5, housing 7, driving device and heaters.

As shown in Figure 3, the cross section of described urceolus 1 is C type, and C type mouth, as blood vessel inlet channel 11, is convenient to blood vessel and is entered inner core 2 inside; Urceolus 1 inwall has female thread 14; The sidewall of urceolus 1 has rectangle locating slot 13 in the axial direction.

As shown in Figure 4, described housing 7 is the cuboid of inner hollow and both ends open, and its inner space is divided into the sliding space for the end of a thread that slides and the heating space for delivery heating device, the cuboid that sliding space is corresponding is provided with along its length one and pushes away groove 8; Described housing 7 is fixedly connected with urceolus 1, and is communicated with inner core 2 by rectangle locating slot 13.

As shown in Figure 5, the outer wall of described inner core 2 has external screw thread 12, and described female thread 14 matches with external screw thread 12, and inner core 2 can be advanced along helix in urceolus 1; One end face of described inner core 2 is provided with convex body 9, described convex body 9 inner hollow, and hollow structure conveniently can reclaim the end of a thread come off when ligation resets.A convex body mouth 10 is had in the side of convex body 9; The internal cavities of the sliding space of housing 7 with convex body 9 can be communicated with, when inlet wire by the end of a thread stuck fast by described convex body mouth 10; The other end of inner core 2 slightly stretches out urceolus 1, and is fixedly connected with driven gear 3; Inner core 2 is coaxial with driven gear 3; The reference diameter of driven gear 3 is slightly larger than inner core 2 diameter.

As shown in Figure 6, described two driving gears 4 rotate around respective gear shaft 5 respectively, and the common driven gear 3 that drives rotates; Two gear shafts 5 are driven by driving device.Described driving device is that bracing wire driving or motor drive.

Work process of the present invention is as follows:

(1) inlet wire: have the surgical thread of the end of a thread to do feed motion from the groove 8 that pushes away of housing 7 by the pilot tape of locating fork 6 shown in Fig. 7, surgical thread rear end remains certain pulling force, the end of a thread is delivered to the convex body 9 of inner core 2 end face, the end of a thread is clamped on convex body mouth 10 place, enters knotting original state;

(2) drive: driving device drives two driving gears 4 to rotate, thus the common driven gear 3 that drives rotates; Driven gear 3 drives inner core 2 to rotate advance along helix in urceolus 1;

(3) tie a knot: the end of a thread one end of surgical thread is fixed on convex body 9, and the other end keeps suitable pulling force effect, drive surgical thread at vessel outer wall compact winding by the precession of inner core 2 in urceolus 1;

(4) sinter: coiling place heater being pushed to surgical thread by the heating space of housing 7, makes surgical thread melting consolidation, realize the ligation of blood vessel or tissue; Described heater can adopt high temperature resistance silk.

(5) reset: driving device drives inner core 2 convolution in the other direction, and inner core 2 resets, and the end of a thread departed from after knotting is recycled in the cavity of convex body 9, enters and ties a knot next time.

Claims

1. a surgical operation ligature carrier, it is characterized in that, comprise urceolus (1), inner core (2), driven gear (3), two driving gears (4), two gear shafts (5), housing (7), driving device and heaters; Wherein, the cross section of described urceolus (1) is C type, and its inwall has female thread (14); The sidewall of urceolus (1) has rectangle locating slot (13) in the axial direction; Described housing (7) is for inner hollow and the cuboid of both ends open, its inner space is divided into the sliding space for the end of a thread that slides and the heating space for delivery heating device, the cuboid that sliding space is corresponding is provided with along its length one and pushes away groove (8); Described housing (7) is fixedly connected with urceolus (1), and is communicated with inner core (2) by rectangle locating slot (13); The outer wall of described inner core (2) has external screw thread (12), and described female thread (14) matches with external screw thread (12), and inner core (2) can be advanced along helix in urceolus (1); One end face of described inner core (2) is provided with convex body (9), described convex body (9) inner hollow, has a convex body mouth (10) in the side of convex body (9); The internal cavities of the sliding space of housing (7) with convex body (9) can be communicated with by described convex body mouth (10); The other end of inner core (2) slightly stretches out urceolus (1), and is fixedly connected with driven gear (3); The reference diameter of driven gear (3) is slightly larger than inner core (2) diameter; Described two driving gears (4) rotate around respective gear shaft (5) respectively, and jointly drive driven gear (3) to rotate; Two gear shafts (5) are driven by driving device.

2. a kind of surgical operation ligature carrier according to claim 1, is characterized in that, described driving device is that bracing wire driving or motor drive.

3. a kind of surgical operation ligature carrier according to claim 1, it is characterized in that, described heater is high temperature resistance silk.